WO2005120478A1 - Pharmaceutical compositions for the treatment of disease and/or symptoms in arthritis - Google Patents

Pharmaceutical compositions for the treatment of disease and/or symptoms in arthritis Download PDF

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Publication number
WO2005120478A1
WO2005120478A1 PCT/GB2005/002233 GB2005002233W WO2005120478A1 WO 2005120478 A1 WO2005120478 A1 WO 2005120478A1 GB 2005002233 W GB2005002233 W GB 2005002233W WO 2005120478 A1 WO2005120478 A1 WO 2005120478A1
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Prior art keywords
cannabinoids
combination
cbd
thc
cannabinoid
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PCT/GB2005/002233
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French (fr)
Inventor
Philip Robson
Geoffrey Guy
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Gw Pharma Limited
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Publication date
Priority to PL05749393T priority Critical patent/PL1765314T3/en
Priority to CN2005800186476A priority patent/CN1976690B/en
Priority to CA2568997A priority patent/CA2568997C/en
Priority to EP05749393.4A priority patent/EP1765314B1/en
Priority to US11/628,814 priority patent/US20080139667A1/en
Priority to AU2005251505A priority patent/AU2005251505B2/en
Application filed by Gw Pharma Limited filed Critical Gw Pharma Limited
Priority to MXPA06014057A priority patent/MXPA06014057A/en
Priority to JP2007526537A priority patent/JP4920588B2/en
Priority to ES05749393T priority patent/ES2735229T3/en
Publication of WO2005120478A1 publication Critical patent/WO2005120478A1/en
Priority to US15/068,707 priority patent/US20160361290A1/en
Priority to US16/562,515 priority patent/US20200206184A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
    • A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
    • A61K31/352—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. methantheline 
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
    • A61K31/047—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates having two or more hydroxy groups, e.g. sorbitol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
    • A61K31/05—Phenols
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
    • A61K36/18—Magnoliophyta (angiosperms)
    • A61K36/185—Magnoliopsida (dicotyledons)
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/10—Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/007—Pulmonary tract; Aromatherapy
    • A61K9/0073—Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00—Drugs for skeletal disorders
    • A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/04—Centrally acting analgesics, e.g. opioids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/20—Hypnotics; Sedatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/10—Preparation or pretreatment of starting material
    • A61K2236/15—Preparation or pretreatment of starting material involving mechanical treatment, e.g. chopping up, cutting or grinding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/30—Extraction of the material
    • A61K2236/39—Complex extraction schemes, e.g. fractionation or repeated extraction steps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/50—Methods involving additional extraction steps
    • A61K2236/51—Concentration or drying of the extract, e.g. Lyophilisation, freeze-drying or spray-drying
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
    • A61K2236/50—Methods involving additional extraction steps
    • A61K2236/55—Liquid-liquid separation; Phase separation

Definitions

  • the present invention relates to the use of a combination of cannabinoids for the treatment of pain, inflammation and/or disease modification in arthritis.
  • the cannabinoids are selected from cannabidiol (CBD) or cannabidivarin (CBDV) and delta-9-tetrahydrocannabinol (THC) or tetrahydrocannabinovarin (THCV) .
  • CBD cannabidiol
  • CBDV cannabidivarin
  • THCV delta-9-tetrahydrocannabinol
  • THCV tetrahydrocannabinovarin
  • Arthritis is a painful condition of the joints. There are different types of the disease yet all cause pain and inflammation of the joints and are often degenerative in nature. Some of the most common types of arthritis are osteoarthritis and rheumatoid arthritis.
  • Osteoarthritis is a disease that affects the joints of around 8 in 10 people over the age of 50. Osteoarthritis is caused by the joint cartilage becoming thin and uneven over time and can in some cases wear out completely. In addition to the wearing out of the joints, the joint capsule can become thicker and in consequence there is an increase in the amount of synovial fluid that is generated. This in turn causes the joint to swell. Bony spurs may also grow in the affected area causing inflammation in the affected tissues. Osteoarthritis can involve all joints in the body, but is most commonly found in the fingers, knees, hips and spine. Rheumatoid arthritis is a systemic disease, which can affect the entire body and is one of the most common forms of arthritis.
  • the inflamed joint lining can also invade and damage bone and cartilage when inflammatory cells release enzymes that are able to digest bone and cartilage.
  • the inflamed joint can lose its shape and alignment, resulting in pain and loss of movement. It is typically chronic and can flare-up at intervals.
  • rheumatoid arthritis In addition to the pain and inflammation experienced in the affected joints, rheumatoid arthritis can cause loss of appetite and weight, lethargy, muscle and tendon pain, fever, lumps under the skin (rheumatoid nodules) and severe eye inflammation. There are many complications including anaemia, pericarditis, vasculitis and Raynaud's phenomenon .
  • rheumatoid arthritis is an autoimmune disease.
  • the body's natural immune system does not operate as it should, resulting in the immune system attacking healthy joint tissue and causing inflammation and subsequent joint damage.
  • the disease could be triggered by an infection in some people who have an inherited tendency for the disease that prompts the immune system to form damaging aggregates of antigen and antibody immune complexes.
  • people may notice general fatigue, soreness, stiffness and aching. Pain and swelling may occur in the same joints on both sides " of the body and will usually start in the hands or feet.
  • Rheumatoid arthritis affects the wrist and many of the hand joints, but usually not the joints that are closest to the fingernails (except the thumb) . Rheumatoid arthritis can also affect elbows, shoulders, neck, knees, hips and ankles. It tends to persist over prolonged periods of time, and over time, the inflamed joints may become damaged .
  • Treatment of rheumatoid arthritis is limited to the control of inflammation and the relief of pain by means of rest, splinting of the inflamed joint, physiotherapy, and the use of anti-inflammatory and pain killing drugs.
  • the treatment methods focus on relieving pain, reducing inflammation, stopping or slowing joint damage, and improving the patient's well being.
  • the current medications that are provided to patients with rheumatoid arthritis can be divided into two groups;
  • Symptomatic medications such as non-steroidal anti- inflammatory drugs (NSAIDs) and aspirin, analgesics, and corticosteroids . These drugs help reduce joint pain, stiffness and swelling. Symptomatic medications may be used in combination with disease-modifying anti- rheumatic drugs.
  • NSAIDs non-steroidal anti- inflammatory drugs
  • DMARDs Disease-modifying anti -rheumatic drugs
  • treatment most often involves some combination of exercise, rest, joint protection, and physical and occupational therapy. Surgery can be an option for joints that are severely damaged and painful. A balance of rest and exercise can help conserve energy and maintain a range of motion and use of the joints.
  • cannabis as a medicine has long been known and during the 19 th Century preparations of cannabis were recommended as a hypnotic sedative which were useful for the treatment of hysteria, delirium, epilepsy, nervous insomnia, migraine, pain and dysmenorrhoea .
  • Such dosage forms include administering the cannabinoids to the sublingual or buccal mucosae, inhalation of a cannabinoid vapour by vaporisation or nebulisation, enemas or solid dosage forms such as gels, capsules, tablets, pastilles and lozenges.
  • Oral administration of CBD was found to be the most effective at inhibition of PBQ- induced writhing in mice.
  • THC and CBN were found to be least effective at reducing analgesia and inflammation (Formukong et al . , 1988).
  • Holdcroft et al . have shown that cannabinoids can have analgesic and possible anti-inflammatory properties.
  • Administration of 50mg of THC to a patient with Mediterranean fever resulted in a highly significant reduction in the amount of analgesia that the patient required (Holdcroft et al . , 1997a).
  • CBD can be used to treat inflammatory diseases such as rheumatoid arthritis or Crohn's disease.
  • Inflammatory diseases involve a complex interaction between several components such as Interleukins, TNF- ⁇ and nitric oxide.
  • the data presented by Feldmann et al . describes the inhibition of TNF- ⁇ and nitric oxide production by CBD. This cannabinoid was also shown to suppress arthritis in a dose dependant manner in a collagen induced arthritis model in mice.
  • cannabinoids such as THC or CBD or their propyl variants, tetrahydrocannabinovarin (THCV) and cannabidivarin (CBDV)
  • THCV tetrahydrocannabinovarin
  • CBDV cannabidivarin
  • CBD Broad ratio CBD ⁇ 25:75 Rheumatoid arthritis; inflammatory bowel disease .
  • Formulations containing specific, defined ratios of cannabinoids may be formulated from pure, synthetic cannabinoids or from extracts derived from the cannabis plant in combination with pharmaceutical carriers and excipients .
  • a major disadvantage with the currently available drug therapies to treat arthritis is that the patient often has to take a combination of drugs in order to treat the symptoms of the disease such as the pain and associated inflammation, and at the same time the patient has to take a drug in order to modify the disease.
  • CBD cannabidiol
  • An important benefit of the use of the medication described in the present invention is that both the disease and the symptoms of the disease can be treated by the same medication. This in turn has numerous benefits which include a greater degree of flexibility for the patient as they will have to adhere to a less " strict drug regime, the patient is also likely to experience less side effects as there will be less potentially harmful interaction between combined drug therapies .
  • x is selected from the group consisting of cannabidiol (CBD) and cannabidivarin (CBDV) and where y is selected from the group consisting of delta-9-tetrahydrocannabinol (THC) and tetrahydrocannabinovarin (THCV) , in the manufacture of a pharmaceutical formulation for use in the treatment of arthritis wherein the ratio of x:y by weight is less than or equal to 19:1.
  • CBD cannabidiol
  • CBDV cannabidivarin
  • y is selected from the group consisting of delta-9-tetrahydrocannabinol (THC) and tetrahydrocannabinovarin (THCV)
  • the treatment of arthritis is the treatment of osteoarthritis or rheumatoid arthritis.
  • One embodiment of the invention provides a combination of cannabinoids for use in the treatment of one or more of the symptoms of pain, inflammation or lack of sleep in arthritis.
  • a combination of cannabinoids for use in disease modification in arthritis More preferably there is provided a combination of cannabinoids for use in the treatment of one or more of the symptoms and in disease modification of arthritis.
  • the ratio of cannabinoids x:y is less than or equal to 19:1, more preferably the ratio of x:y is less than or equal to 17:1 through to less than or equal to 3:1 in integers of 2. More preferably the ratio of x:y is less than or equal to 2.5:1 through to less than or equal to 1.25:1 in integers of 0.25. Most preferably the ratio of x:y is substantially 1:1, particularly 0.93:1.
  • CBDV:THCV CBDV:THC
  • CBDV:THCV CBDV:THCV
  • CBDV:THCV CBDV:THCV
  • a further embodiment of the invention provides a combination of cannabinoids to be used as a pharmaceutical formulation that are packaged for delivery in the form of a gel, a tablet, a liquid, a capsule or for vaporisation. More preferably the combination of cannabinoids to be used as a pharmaceutical formulation are packaged for delivery sublingually or buccally, preferably as a sublingual or buccal spray.
  • the pharmaceutical formulation further comprises one or more carrier solvent/s.
  • the carrier solvents are ethanol and/or propylene glycol . More preferably the ratio of ethanol to propylene glycol is between 4:1 and 1:4. More preferably still the ratio is 1:1.
  • the dose is formulated such that a patient is able to titrate their dose.
  • Dose ranges are preferably in the range of between 5 and 25mg of each cannabinoid, more preferably in the range of 10 to 20mg of each cannabinoid, preferably in the range of 12 to 14mg of each cannabinoid more preferably still in the range of 12.5 to 13.5 mg of each cannabinoid.
  • the administration of a combination of cannabinoids such as THC and CBD could be administered to a patient either at the same time, wherein the cannabinoids would be contained in the same formulation.
  • the cannabinoids could also be administered at separate times for example; a formulation containing CBD could be administered to a patient at a fixed time prior to a formulation containing THC in order to ameliorate some of the side effects of THC, which CBD is known to improve or vice versa.
  • the two cannabinoids could also be administered consecutively to a patient if required.
  • the invention provides a combination of cannabinoids, which are present as one or more cannabis based medicine extract/s (CBME/s) .
  • CBME/s cannabis based medicine extract/s
  • the CBME/s are produced by extraction with supercritical or subcritical C0 2 .
  • the CBME/s are produced by extraction from plant material by volatilisation with a heated gas.
  • the CBME/s contain all of the naturally occurring cannabinoids in the plant material. Alternatively synthetic or highly purified isolates of the cannabinoids can be used.
  • a method of treating a subject with arthritis which comprises administering the subject a combination of cannabinoids x and y, where x is selected from the group consisting of cannabidiol (CBD) and cannabidivarin (CBDV) and where y is selected from the group consisting of delta-9-tetrahydrocannabinol (THC) and tetrahydrocannabinovarin (THCV) , wherein the ratio of x:y by weight is less than or equal to 19:1.
  • Figure 1 shows an HPLC chromatographic profile which characterises a CBD-containing cannabis based medicine extract
  • Figure 2 shows an HPLC chromatographic profile which characterises a THC-containing cannabis based medicine extract
  • Figure 3 shows an HPLC chromatographic profile which characterises a cannabis based medicine extract comprising substantially equal quantities of CBD and THC.
  • a cannabis based medicine extract (CBME) was prepared as outlined in Example 1 and contained approximately equal amounts of the cannabinoids THC and CBD and this was administered to patients with chronic rheumatoid arthritis with pain as a secondary condition.
  • the administration of this combination of cannabinoids could possibly reduce the pain and inflammation caused by the rheumatoid arthritis but unexpectedly the cannabis based medicine extract containing approximately equal quantities of THC and CBD also produced a disease modifying effect in the patients with rheumatoid arthritis.
  • Figure 1 shows an HPLC chromatographic profile of a CBD- containing cannabis based medicine extract (CBME) .
  • Figure 2 shows an HPLC chromatographic profile of a THC- containing cannabis based medicine extract (CBME) .
  • Figure 3 shows an HPLC chromatographic profile of a cannabis based medicine extract (CBME) containing substantially equal quantities of CBD and THC.
  • CBD cannabis based medicine extract
  • Medicinal cannabis was produced and prepared with reference to the method disclosed in WO 02/064109
  • Example 15 The resulting plant material was processed as described in the flow chart below. The process of manufacture of a High THC or High CBD cannabis based medicine extract is described.
  • Medicinal Cannabis High THC or High CBD
  • Extraction with a specific volume of liquid carbon dioxide over 6 to 8 hours I Removal of C0 2 by depressurisation to recover crude extract I Winterisation followed by chilling (-20°c/48h) to precipitate unwanted waxes
  • Removal of unwanted waxy material by cold filtration Removal of ethanol from the filtrate by thin film evaporation under reduced pressure
  • the resulting extract is referred to as a cannabis based medicinal drug extract and is also classified as a Botanical Drug Substance according to the US Food and Drug Administration Guidance for Industry Botanical Drug Products .
  • the quantity of cannabinoid in the CBME can be accurately assessed by way of measurement by HPLC with reference to the method disclosed in WO 02/064109 (Example 16) .
  • An example of an HPLC chromatogram of a CBD-containing CBME produced using a high CBD medicinal cannabis plant extracted with C0 is shown in Figure 1.
  • An example of an HPLC chromatogram of a THC-containing CBME produced using a high THC medicinal cannabis plant extracted with C0 2 is shown in Figure 2.
  • An example of an HPLC chromatogram containing the relevant ratios of THC and CBD CBMEs is shown in Figure 3.
  • the invention has been exemplified with reference to THC and CBD yet it is clear to a man skilled in the art that the pharmacological similarities between THC and THCV and CBD and CBDV are such that similar results could be produced using the cannabinoids THCV and CBDV in place of or in addition to THC and CBD.
  • the cannabis based medicine extract contained delta-9-tetrahydrocannabinol (THC) at a concentration of 27mg/ml and cannabidiol (CBD) at a concentration of 25mg/ml in ethanol :propylene glycol (50:50) excipient.
  • THC delta-9-tetrahydrocannabinol
  • CBD cannabidiol
  • the cannabis based medicine extract was presented in a pump action spray where each activation delivers lOO ⁇ l of spray, containing THC (2.7mg) and CBD (2.5mg).
  • the subjects in the study were randomised equally to either the cannabis based medicine extract or a placebo.
  • the placebo matched the appearance, smell and taste of the active formulation, but containing no active components, in ethanol :propylene glycol (50:50) excipient .
  • the placebo was presented in a pump action spray where each activation delivers lOO ⁇ l of spray.
  • Patients were screened to determine eligibility at visit 1 and baseline assessments were taken at this time. The patients returned 2 weeks later for visit 2 at which point they were randomised into one of the two groups.
  • the study medication was administered as an evening dose only and patients were asked to titrate their dose until they obtained optimum efficiency.
  • Efficacy assessments were considered as part of the study. Diary card self-assessments were recorded by each patient on a daily basis for morning pain at rest and on movement, morning stiffness and quality of sleep. Short form McGill Questionnaires were completed at visits 1 and 4 in order to compare changes in intensity of pain, intensity of pain at present, pain at present and global impression of change. A Disease Activity Score was calculated at visits 1 and 4 from a 28 joint count, erythrocyte sedimentation rate and global disease activity score. Assessments of the use of rescue analgesia, adverse events, blood chemistry and vital signs were all recorded at visits 1 and 4 in order to consider any changes.
  • the LS Mean figure is the mean change from the baseline adjusted score, a negative difference indicates a benefit .
  • Tables 1 and 2 demonstrate that the administration of THC:CBD (27mg/ml : 25mg/ml) to patients suffering pain in rheumatoid arthritis results in a statistically significant reduction in morning pain at rest when compared to the placebo.
  • the LS Mean figure is the mean change from the baseline adjusted score, a negative difference indicates a benefit .
  • Tables 3 and 4 demonstrate that the administration of THC: CBD (27mg/ml : 25mg/ml) to patients suffering pain in rheumatoid arthritis results in an improved quality of sleep when compared to the placebo.
  • THC CBD (27mg/ml: Placebo 25mg/ml) LS p- s.e. LS Mean s.e. Difference 95% CI Mean value [-1.23, 0.002 -0.88 0.16 -0.03 0.17 -0.76 -0.28]
  • the LS Mean figure is the mean change from the baseline adjusted score, a negative difference indicates a benefit .
  • Tables 5 and 6 demonstrate that the administration of THC: CBD (27mg/ml : 25mg/ml) to patients suffering pain in rheumatoid arthritis results in an improved Disease Activity Score when compared to the placebo.
  • the Disease Activity Score is a method used to measure the degree of rheumatoid arthritis experienced by a patient. It involves determination of how swollen and tender 28 different joints are. A blood test is also used as part of the Disease Activity Score to measure the erythrocyte sedimentation rate. This rate is a lab method for determining an acute phase response to inflammation. A global disease activity score based on how the patient is feeling also contributes to an overall figure that is calculated. A composite score of greater than 3.7 is considered to be high.

Abstract

The invention relates to the use of a combination of cannabinoids for the treatment of pain, inflammation and/or disease modification in arthritis. Preferably the cannabinoids are selected from cannabidiol (CBD) or cannabidivarin (CBDV) and delta-9-tetrahydrocannabinol (THC) or tetrahydrocannabinovarin (THCV). More preferably the cannabinoids are in a predefined ratio by weight of less than or equal to 19:1 of CBD or CBDV to THC or THCV.

Description

PHARMACEUTICAL COMPOSITIONS FOR THE TREATMENT OF DISEASE AND/OR SYMPTOMS IN ARTHRITIS
The present invention relates to the use of a combination of cannabinoids for the treatment of pain, inflammation and/or disease modification in arthritis. Preferably the cannabinoids are selected from cannabidiol (CBD) or cannabidivarin (CBDV) and delta-9-tetrahydrocannabinol (THC) or tetrahydrocannabinovarin (THCV) . More preferably the cannabinoids are in a predefined ratio by weight of less than or equal to 19:1 of CBD or CBDV to THC or THCV.
BACKGROUND TO THE INVENTION
Arthritis is a painful condition of the joints. There are different types of the disease yet all cause pain and inflammation of the joints and are often degenerative in nature. Some of the most common types of arthritis are osteoarthritis and rheumatoid arthritis.
Osteoarthritis is a disease that affects the joints of around 8 in 10 people over the age of 50. Osteoarthritis is caused by the joint cartilage becoming thin and uneven over time and can in some cases wear out completely. In addition to the wearing out of the joints, the joint capsule can become thicker and in consequence there is an increase in the amount of synovial fluid that is generated. This in turn causes the joint to swell. Bony spurs may also grow in the affected area causing inflammation in the affected tissues. Osteoarthritis can involve all joints in the body, but is most commonly found in the fingers, knees, hips and spine. Rheumatoid arthritis is a systemic disease, which can affect the entire body and is one of the most common forms of arthritis. It is characterised by inflammation of the membranes that line a joint, which in turn causes pain, stiffness, warmth, redness and swelling to the area. The small joints of the fingers and hands are most seriously affected but the condition can spread to involve the wrists, elbows, shoulders and other joints. The inflamed joint lining can also invade and damage bone and cartilage when inflammatory cells release enzymes that are able to digest bone and cartilage. The inflamed joint can lose its shape and alignment, resulting in pain and loss of movement. It is typically chronic and can flare-up at intervals.
In addition to the pain and inflammation experienced in the affected joints, rheumatoid arthritis can cause loss of appetite and weight, lethargy, muscle and tendon pain, fever, lumps under the skin (rheumatoid nodules) and severe eye inflammation. There are many complications including anaemia, pericarditis, vasculitis and Raynaud's phenomenon .
The cause of rheumatoid arthritis is not yet known. However, it is known that rheumatoid arthritis is an autoimmune disease. The body's natural immune system does not operate as it should, resulting in the immune system attacking healthy joint tissue and causing inflammation and subsequent joint damage. The disease could be triggered by an infection in some people who have an inherited tendency for the disease that prompts the immune system to form damaging aggregates of antigen and antibody immune complexes. Early in the disease, people may notice general fatigue, soreness, stiffness and aching. Pain and swelling may occur in the same joints on both sides" of the body and will usually start in the hands or feet. Rheumatoid arthritis affects the wrist and many of the hand joints, but usually not the joints that are closest to the fingernails (except the thumb) . Rheumatoid arthritis can also affect elbows, shoulders, neck, knees, hips and ankles. It tends to persist over prolonged periods of time, and over time, the inflamed joints may become damaged .
Treatment of rheumatoid arthritis is limited to the control of inflammation and the relief of pain by means of rest, splinting of the inflamed joint, physiotherapy, and the use of anti-inflammatory and pain killing drugs. The treatment methods focus on relieving pain, reducing inflammation, stopping or slowing joint damage, and improving the patient's well being.
The current medications that are provided to patients with rheumatoid arthritis can be divided into two groups;
1. Symptomatic medications, such as non-steroidal anti- inflammatory drugs (NSAIDs) and aspirin, analgesics, and corticosteroids . These drugs help reduce joint pain, stiffness and swelling. Symptomatic medications may be used in combination with disease-modifying anti- rheumatic drugs. 2. Disease-modifying anti -rheumatic drugs (DMARDs) , include' low doses of methotrexate, leflunomide, D- Penicillamine, sulfasalazine, gold therapy, minocycline, azathioprine, hydroxychloroquine (and other antimalarials) , cyclosporine and biologic agents. In addition to drug therapy, treatment most often involves some combination of exercise, rest, joint protection, and physical and occupational therapy. Surgery can be an option for joints that are severely damaged and painful. A balance of rest and exercise can help conserve energy and maintain a range of motion and use of the joints.
The use of cannabis as a medicine has long been known and during the 19th Century preparations of cannabis were recommended as a hypnotic sedative which were useful for the treatment of hysteria, delirium, epilepsy, nervous insomnia, migraine, pain and dysmenorrhoea .
Until recent times the administration of cannabis to a patient could only be achieved by preparation of cannabis by decoction in ethanol, which could then be swallowed or by the patient inhaling the vapours of cannabis by smoking the dried plant material . Recent methods have sought to find new ways to deliver cannabinoids to a patient including those which bypass the stomach and the associated first pass effect of the liver which can remove up to 90% of the active ingested dose and avoid the patient having to inhale unhealthy tars and associated carcinogens into their lungs.
Such dosage forms include administering the cannabinoids to the sublingual or buccal mucosae, inhalation of a cannabinoid vapour by vaporisation or nebulisation, enemas or solid dosage forms such as gels, capsules, tablets, pastilles and lozenges. In 1988 a study was undertaken in order to determine the analgesic and anti-inflammatory activity of various cannabinoids and cannabinoid pre-cursors. Oral administration of CBD was found to be the most effective at inhibition of PBQ- induced writhing in mice. THC and CBN were found to be least effective at reducing analgesia and inflammation (Formukong et al . , 1988).
Holdcroft et al . have shown that cannabinoids can have analgesic and possible anti-inflammatory properties. Administration of 50mg of THC to a patient with Mediterranean fever resulted in a highly significant reduction in the amount of analgesia that the patient required (Holdcroft et al . , 1997a).
A follow-on publication by the same authors examined the oral administration of oil of cannabis. The capsules containing 5.75% THC, 4.73% CBD and 2.42% CBN were administered to a patient with familial Mediterranean fever. During the 3 weeks of active treatment there was a decrease in the amount of escape medication (morphine) required by the patient (Holdcroft et al . , 1997b) . There were no changes in the measured inflammatory markers.
It has previously been shown by Feldmann et al .
(International patent application WO 99/52524) that pure CBD can be used to treat inflammatory diseases such as rheumatoid arthritis or Crohn's disease. Inflammatory diseases involve a complex interaction between several components such as Interleukins, TNF-α and nitric oxide. The data presented by Feldmann et al . describes the inhibition of TNF-α and nitric oxide production by CBD. This cannabinoid was also shown to suppress arthritis in a dose dependant manner in a collagen induced arthritis model in mice.
There is considerable literature concerning the immune modulating effects of constituents of cannabis a review of these was undertaken by Klein (Klein, 1998) .
The use of different ratios of cannabinoids such as THC or CBD or their propyl variants, tetrahydrocannabinovarin (THCV) and cannabidivarin (CBDV) , in the treatment of different diseases and conditions has previously been described by the applicant in their UK patent application GB2377633.
Specific ratios of THC and CBD or THCV and CBDV were reported to have been useful in the treatment or management of specific diseases or medical conditions. The following table details some of these areas.
Product Group Ratio THC: CBD Target Therapeutic Area
High THC >95:5 Cancer pain; Migraine; Appetite stimulation.
Even ratio 50:50 Multiple sclerosis; Spinal cord injury; Peripheral neuropathy; Neurogenic pain.
Broad ratio CBD <25:75 Rheumatoid arthritis; inflammatory bowel disease . High CBD <5:95 Psychotic disorders (schizophrenia) ; Epilepsy; Movement disorders; Stroke; Head injury; Disease modification in rheumatoid arthritis and other inflammatory conditions; Appetite suppression.
Formulations containing specific, defined ratios of cannabinoids may be formulated from pure, synthetic cannabinoids or from extracts derived from the cannabis plant in combination with pharmaceutical carriers and excipients .
A major disadvantage with the currently available drug therapies to treat arthritis is that the patient often has to take a combination of drugs in order to treat the symptoms of the disease such as the pain and associated inflammation, and at the same time the patient has to take a drug in order to modify the disease.
At present there are no known medications to treat the symptoms of pain and inflammation and at the same time act as disease modifying anti-rheumatic drugs.
Surprisingly it has been found that the use of a cannabis based medicine extract that contains approximately equal amounts of the cannabinoids delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) can be used to both modify rheumatoid arthritis disease and treat the symptoms of pain and inflammation caused by the disease.
An important benefit of the use of the medication described in the present invention is that both the disease and the symptoms of the disease can be treated by the same medication. This in turn has numerous benefits which include a greater degree of flexibility for the patient as they will have to adhere to a less "strict drug regime, the patient is also likely to experience less side effects as there will be less potentially harmful interaction between combined drug therapies .
SUMMARY OF INVENTION
According to the first aspect of the present invention there is provided the use of a combination of cannabinoids x and y, where x is selected from the group consisting of cannabidiol (CBD) and cannabidivarin (CBDV) and where y is selected from the group consisting of delta-9-tetrahydrocannabinol (THC) and tetrahydrocannabinovarin (THCV) , in the manufacture of a pharmaceutical formulation for use in the treatment of arthritis wherein the ratio of x:y by weight is less than or equal to 19:1.
Preferably the treatment of arthritis is the treatment of osteoarthritis or rheumatoid arthritis.
One embodiment of the invention provides a combination of cannabinoids for use in the treatment of one or more of the symptoms of pain, inflammation or lack of sleep in arthritis. Preferably there is provided a combination of cannabinoids for use in disease modification in arthritis. More preferably there is provided a combination of cannabinoids for use in the treatment of one or more of the symptoms and in disease modification of arthritis.
In one embodiment the ratio of cannabinoids x:y is less than or equal to 19:1, more preferably the ratio of x:y is less than or equal to 17:1 through to less than or equal to 3:1 in integers of 2. More preferably the ratio of x:y is less than or equal to 2.5:1 through to less than or equal to 1.25:1 in integers of 0.25. Most preferably the ratio of x:y is substantially 1:1, particularly 0.93:1.
Preferred combinations of cannabinoids include CBD: THC, CBDV:THCV, CBDV:THC and CBD:THCV. Alternatively combinations comprising CBD, CBDV, THC and THCV could be used.
A further embodiment of the invention provides a combination of cannabinoids to be used as a pharmaceutical formulation that are packaged for delivery in the form of a gel, a tablet, a liquid, a capsule or for vaporisation. More preferably the combination of cannabinoids to be used as a pharmaceutical formulation are packaged for delivery sublingually or buccally, preferably as a sublingual or buccal spray. Advantageously the pharmaceutical formulation further comprises one or more carrier solvent/s. Preferably the carrier solvents are ethanol and/or propylene glycol . More preferably the ratio of ethanol to propylene glycol is between 4:1 and 1:4. More preferably still the ratio is 1:1.
Favourably the dose is formulated such that a patient is able to titrate their dose. Dose ranges are preferably in the range of between 5 and 25mg of each cannabinoid, more preferably in the range of 10 to 20mg of each cannabinoid, preferably in the range of 12 to 14mg of each cannabinoid more preferably still in the range of 12.5 to 13.5 mg of each cannabinoid. The administration of a combination of cannabinoids such as THC and CBD could be administered to a patient either at the same time, wherein the cannabinoids would be contained in the same formulation. The cannabinoids could also be administered at separate times for example; a formulation containing CBD could be administered to a patient at a fixed time prior to a formulation containing THC in order to ameliorate some of the side effects of THC, which CBD is known to improve or vice versa. The two cannabinoids could also be administered consecutively to a patient if required.
Preferably the invention provides a combination of cannabinoids, which are present as one or more cannabis based medicine extract/s (CBME/s) . In one embodiment the CBME/s are produced by extraction with supercritical or subcritical C02. In an additional embodiment the CBME/s are produced by extraction from plant material by volatilisation with a heated gas. Preferably the CBME/s contain all of the naturally occurring cannabinoids in the plant material. Alternatively synthetic or highly purified isolates of the cannabinoids can be used.
According to a second aspect of the present invention there is provided a method of treating a subject with arthritis, which comprises administering the subject a combination of cannabinoids x and y, where x is selected from the group consisting of cannabidiol (CBD) and cannabidivarin (CBDV) and where y is selected from the group consisting of delta-9-tetrahydrocannabinol (THC) and tetrahydrocannabinovarin (THCV) , wherein the ratio of x:y by weight is less than or equal to 19:1. Certain aspects of this invention are further described, by way of example only, with reference to the accompanying drawings in which:
Figure 1 shows an HPLC chromatographic profile which characterises a CBD-containing cannabis based medicine extract;
Figure 2 shows an HPLC chromatographic profile which characterises a THC-containing cannabis based medicine extract; and
Figure 3 shows an HPLC chromatographic profile which characterises a cannabis based medicine extract comprising substantially equal quantities of CBD and THC.
SPECIFIC DESCRIPTION
A cannabis based medicine extract (CBME) was prepared as outlined in Example 1 and contained approximately equal amounts of the cannabinoids THC and CBD and this was administered to patients with chronic rheumatoid arthritis with pain as a secondary condition. The administration of this combination of cannabinoids could possibly reduce the pain and inflammation caused by the rheumatoid arthritis but unexpectedly the cannabis based medicine extract containing approximately equal quantities of THC and CBD also produced a disease modifying effect in the patients with rheumatoid arthritis. The features of the invention are illustrated further by' reference to the following examples, together with the accompanying Figures in which:
Figure 1 shows an HPLC chromatographic profile of a CBD- containing cannabis based medicine extract (CBME) .
Figure 2 shows an HPLC chromatographic profile of a THC- containing cannabis based medicine extract (CBME) .
Figure 3 shows an HPLC chromatographic profile of a cannabis based medicine extract (CBME) containing substantially equal quantities of CBD and THC.
Example 1 :
Preparation of cannabis based medicine extracts (CBME)
Medicinal cannabis was produced and prepared with reference to the method disclosed in WO 02/064109
(Example 15) . The resulting plant material was processed as described in the flow chart below. The process of manufacture of a High THC or High CBD cannabis based medicine extract is described.
Medicinal Cannabis (High THC or High CBD) I Chopping to predominantly 2 -3mm Heating at 100-150°C for su Ifficient time to decarboxylate the acid form of cannabinoids to produce neutral cannabinoids 1 Extraction with a specific volume of liquid carbon dioxide over 6 to 8 hours I Removal of C02 by depressurisation to recover crude extract I Winterisation followed by chilling (-20°c/48h) to precipitate unwanted waxes I Removal of unwanted waxy material by cold filtration 1 Removal of ethanol from the filtrate by thin film evaporation under reduced pressure
The resulting extract is referred to as a cannabis based medicinal drug extract and is also classified as a Botanical Drug Substance according to the US Food and Drug Administration Guidance for Industry Botanical Drug Products .
The quantity of cannabinoid in the CBME can be accurately assessed by way of measurement by HPLC with reference to the method disclosed in WO 02/064109 (Example 16) .
An example of an HPLC chromatogram of a CBD-containing CBME produced using a high CBD medicinal cannabis plant extracted with C0 is shown in Figure 1. An example of an HPLC chromatogram of a THC-containing CBME produced using a high THC medicinal cannabis plant extracted with C02 is shown in Figure 2. An example of an HPLC chromatogram containing the relevant ratios of THC and CBD CBMEs is shown in Figure 3. The invention has been exemplified with reference to THC and CBD yet it is clear to a man skilled in the art that the pharmacological similarities between THC and THCV and CBD and CBDV are such that similar results could be produced using the cannabinoids THCV and CBDV in place of or in addition to THC and CBD.
Example 2 :
Assessment of the efficacy of a cannabis based medicine extract by way of a clinical trial in human rheumatoid arthritis patients.
A seven week, multi-centre, double blind, randomised, parallel group study was undertaken in order to evaluate the efficacy a cannabis based medicine extract on pain in rheumatoid arthritis. The cannabis based medicine extract contained delta-9-tetrahydrocannabinol (THC) at a concentration of 27mg/ml and cannabidiol (CBD) at a concentration of 25mg/ml in ethanol :propylene glycol (50:50) excipient. The cannabis based medicine extract was presented in a pump action spray where each activation delivers lOOμl of spray, containing THC (2.7mg) and CBD (2.5mg).
The subjects in the study were randomised equally to either the cannabis based medicine extract or a placebo. The placebo matched the appearance, smell and taste of the active formulation, but containing no active components, in ethanol :propylene glycol (50:50) excipient . Again the placebo was presented in a pump action spray where each activation delivers lOOμl of spray. Patients were screened to determine eligibility at visit 1 and baseline assessments were taken at this time. The patients returned 2 weeks later for visit 2 at which point they were randomised into one of the two groups. The study medication was administered as an evening dose only and patients were asked to titrate their dose until they obtained optimum efficiency.
After 2 weeks titration on the medication the patients returned for visit 3, at this point the patient confirmed the dose that they were to take for the remaining 3 weeks of the study.
The dose of medication that each patient took varied but was in the range of 5-25mg each of THC and CBD, with the majority of patients receiving between 10 and 20mg each of THC and CBD. The average dose that each patient titrated to was 13.5mg THC and 12.5mg CBD.
After 5 weeks on the study medication the patients returned to make visit 4. All baseline assessments were repeated at this stage.
Efficacy assessments were considered as part of the study. Diary card self-assessments were recorded by each patient on a daily basis for morning pain at rest and on movement, morning stiffness and quality of sleep. Short form McGill Questionnaires were completed at visits 1 and 4 in order to compare changes in intensity of pain, intensity of pain at present, pain at present and global impression of change. A Disease Activity Score was calculated at visits 1 and 4 from a 28 joint count, erythrocyte sedimentation rate and global disease activity score. Assessments of the use of rescue analgesia, adverse events, blood chemistry and vital signs were all recorded at visits 1 and 4 in order to consider any changes.
Results : Some of the data collated from this study is described below.
Comparison of morning pain at rest in patients with rheumatoid arthritis when administered a cannabis based medicine extract containing THC at a concentration of 27mg/ml and CBD at a concentration of 25mg/ml
The efficacy of a cannabis based medicine extract was assessed as described above and the degree of morning pain at rest was recorded by self assessment on a daily basis. The data was collated and statistical analysis was undertaken. Patients assessed morning pain at rest on a scale of 0 (no pain) to 10 (extremely bad pain) . Tables 1 and 2 illustrate the results.
Table 1:
Figure imgf000017_0001
Figure imgf000018_0001
Figure imgf000019_0001
Figure imgf000020_0001
Statistical analysis of this data is shown in Table 2
Table 2 :
Figure imgf000020_0002
The LS Mean figure is the mean change from the baseline adjusted score, a negative difference indicates a benefit . Tables 1 and 2 demonstrate that the administration of THC:CBD (27mg/ml : 25mg/ml) to patients suffering pain in rheumatoid arthritis results in a statistically significant reduction in morning pain at rest when compared to the placebo.
Comparison of quality of sleep in patients with rheumatoid arthritis when administered a cannabis based medicine extract containing THC at a concentration of 27mg/ml and CBD at a concentration of 25mg/ml The efficacy of a cannabis based medicine extract was assessed as described above and the quality of sleep experienced by the patient was recorded by self assessment on a daily basis. The data was collated and statistical analysis was undertaken. Patients assessed quality of sleep on a scale of 0 (very good) to 10 (very bad). Tables 3 and 4 illustrate the results.
Table 3 :
Figure imgf000021_0001
Figure imgf000022_0001
Figure imgf000023_0001
Statistical analysis of this data is shown in Table 4
Table 4:
Figure imgf000023_0002
The LS Mean figure is the mean change from the baseline adjusted score, a negative difference indicates a benefit . Tables 3 and 4 demonstrate that the administration of THC: CBD (27mg/ml : 25mg/ml) to patients suffering pain in rheumatoid arthritis results in an improved quality of sleep when compared to the placebo.
Comparison of Disease Activity Score in patients with rheumatoid arthritis when administered a cannabis based medicine extract containing THC at a concentration of 27mg/ml and CBD at a concentration of 25mg/ml
The efficacy of a cannabis based medicine extract was assessed as described above and the Disease Activity Score for each patient was determined at visits 1 and 4 The data was collated and statistical analysis was undertaken. Tables 5 and 6 illustrate the results.
Table 5:
Figure imgf000024_0001
Figure imgf000025_0001
Statistical analysis of this data is shown in Table 6
Table 6 : THC : CBD (27mg/ml: Placebo 25mg/ml) LS p- s.e. LS Mean s.e. Difference 95% CI Mean value [-1.23, 0.002 -0.88 0.16 -0.03 0.17 -0.76 -0.28]
The LS Mean figure is the mean change from the baseline adjusted score, a negative difference indicates a benefit . Tables 5 and 6 demonstrate that the administration of THC: CBD (27mg/ml : 25mg/ml) to patients suffering pain in rheumatoid arthritis results in an improved Disease Activity Score when compared to the placebo.
The use of a mixture of THC and CBD, where the cannabinoids are in approximately equal quantities when provided to patients with pain associated with rheumatoid arthritis resulted in a decrease in morning pain at rest. The quality of sleep that was experienced by the patients provided with the mixture of equal quantities of THC and CBD was also shown to improve. The patients who were provided with the medication also experienced a decrease in their pain at present as recorded from a questionnaire. Most significantly of all was the effect the medication had on the patients Disease Activity Score.
The Disease Activity Score is a method used to measure the degree of rheumatoid arthritis experienced by a patient. It involves determination of how swollen and tender 28 different joints are. A blood test is also used as part of the Disease Activity Score to measure the erythrocyte sedimentation rate. This rate is a lab method for determining an acute phase response to inflammation. A global disease activity score based on how the patient is feeling also contributes to an overall figure that is calculated. A composite score of greater than 3.7 is considered to be high.
The significance of the findings of the present invention that the use of an approximately 1:1 combination of THC and CBD are able to decrease the Disease Activity Score in patients with rheumatoid arthritis is great.
References :
Formukong E. A., Evans A. T. and Evans F.J. (1988) Analgesic and Antiinflammatory activity of constituents of Cannabi s sa tiva L . Inflamma tion 12(4), 361-371
Holdcroft A. et al . (1997a) Pain relief with oral cannabinoids in familial Mediterranean fever. Anaesthesia 52(5) , 483-6
Holdcroft A. et al . (1997b) Clinical trial experience with cannabinoids. Pharm . Sci . 3, 546-550 Klein T. W. , Newton C. and Friedman H. (1998) Immunol Today 19, 373-380

Claims

Claims
1. The use of a combination of cannabinoids x and y; where x is selected from the group consisting of: cannabidiol (CBD) and cannabidivarin (CBDV); and where y is selected from the group consisting of: delta-9-tetrahydrocannabinol (THC) and tetrahydrocannabinovarin (THCV) ; in the manufacture of a pharmaceutical formulation for use in the treatment of arthritis wherein the ratio of x:y by weight is less than or equal to 19:1.
2. The use of the cannabinoids as claimed in claim 1, in the manufacture of a pharmaceutical formulation for use in the treatment of osteoarthritis.
3. The use of the combination of cannabinoids as claimed in claim 1, in the manufacture of a pharmaceutical formulation for use in the treatment of rheumatoid arthritis.
4. The use of the combination of cannabinoids as claimed in any of the preceding claims, in the manufacture of a pharmaceutical formulation for use in the treatment of pain in arthritis.
5. The use of the combination of cannabinoids as claimed in any of the preceding claims, in the manufacture of a pharmaceutical formulation for use in the treatment of inflammation in arthritis.
6. The use of the combination of cannabinoids as claimed in any of the preceding claims, in the manufacture of a pharmaceutical formulation for use in improvement in quality of sleep in arthritis.
7. The use of the combination of cannabinoids as claimed in any of the preceding claims, in the manufacture of a pharmaceutical formulation for use in disease modification of arthritis.
8. The use of the combination of cannabinoids as claimed in any of the preceding claims, in the manufacture of a pharmaceutical formulation for use in the treatment of one or more symptoms and in disease modification in arthritis.
9. The use of the combination of cannabinoids as claimed claim 8, wherein the one or more symptoms are pain, inflammation or lack of sleep.
10. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the ratio of cannabinoids x:y is less than or equal to 5:1.
11. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the ratio of cannabinoids x:y is less than or equal to 3:1.
12. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the ratio of cannabinoids x:y is less than or equal to 2.5:1.
13. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the ratio of cannabinoids x:y is less than or equal to 2:1.
14. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the ratio of cannabinoids x:y is less than or equal to 1.5:1.
15. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the ratio of cannabinoid x:y is substantially 1:1.
16. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the ratio of cannabinoids x:y is 0.93:1.
17. The use of the combination of cannabinoids as claimed in any of the preceding claims, where cannabinoid x is CBD and cannabinoid y is THC.
18. The use of the combination of cannabinoids as claimed in any of the preceding claims, where cannabinoid x is CBDV and cannabinoid y is THCV.
19. The use of the combination of cannabinoids as claimed in any of the preceding claims, where cannabinoid x is CBDV and cannabinoid y is THC.
20. The use of the combination of cannabinoids as claimed in any of the preceding claims, where cannabinoid x is CBD and cannabinoid y is THCV.
21. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the pharmaceutical formulation is packaged for delivery sublingually or buccally.
22. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the pharmaceutical formulation is in the form of a gel or gel spray, a tablet, a liquid, a capsule or for vaporisation.
23. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the formulation further comprises one or more carrier solvent/s .
24. The use of the combination of cannabinoids as claimed claim 23, wherein the carrier solvent/s are ethanol and/or propylene glycol .
25. The use of the combination of cannabinoids as claimed claim 24, wherein the ratio of ethanol and propylene glycol is between 4:1 and 1:4.
26. The use of the combination of cannabinoids as claimed claim 24 or 26, wherein the ratio of ethanol to propylene glycol is 1:1.
27. The use of a combination of cannabinoids as described in any of the preceding claims, wherein the formulation is in a titratable dosage form.
28. The use "of a combination of cannabinoids as described in any of the preceding claims, wherein the dose taken by a patient is in the range of 5- 25mg of each cannabinoid per day.
29. The use of the combination of cannabinoids as claimed in any of the preceding claims, where cannabinoid x is administered separately, simultaneously or sequentially to cannabinoid y.
30. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the cannabinoids are present as a cannabis based medicine extract (CBME) .
31. The use of the combination of cannabinoids as claimed in any of the preceding claims, wherein the cannabinoids are derived from one or more CBME/s.
32. The use of the combination of cannabinoids as claimed claim 30, wherein the formulation comprises a combination of: a) a cannabis based medicinal extract which comprises THC at more than 90% of the total cannabinoid content in the extract; and b) a cannabis based medicinal extract which comprises CBD at more than 90% of the total cannabinoid content in the extract .
33. The use of the combination of cannabinoids as claimed in any of claims 30 to 32, wherein the CBME/s are produced by extraction with supercritical or subcritical C02.
34. The use of the combination of cannabinoids as claimed in any of claims 30 to 32, wherein the CBME/s are produced by contacting plant material with a heated gas at a temperature which is greater than 100°C, sufficient to volatilise one or more of the cannabinoids in the plant material to form a vapour, and condensing the vapour to form an extract .
35. The use of the combination of cannabinoids as claimed in claims 30-32 where the CBME/s comprise all the naturally occurring cannabinoids in said plant/s .
36. The use of the combination of cannabinoids as claimed in claim 1, wherein the cannabinoids are substantially pure.
37. The use of the combination of cannabinoids as claimed in claim 1, wherein the cannabinoids are synthetic .
38. The use of the combination of cannabinoids as claimed in claims 30-32, wherein the CBD-containing CBME is characterised by a chromatographic profile as illustrated below, where the retention time of the CBD is between 5.4 and 6.4 minutes.
Figure imgf000034_0001
39. The use of the combination of cannabinoids as claimed in claims 30-32, wherein the THC-containing CBME is characterised by a chromatographic profile as illustrated below, where the retention time of the THC is between 9.6 and 10.6 minutes.
Figure imgf000034_0002
40. The use of the combination of cannabinoids as claimed in claims 30-32, wherein the CBME containing THC and CBD is characterised by a chromatographic profile as illustrated below.
Figure imgf000034_0003
41. A method of treating a subject with arthritis, comprising; administering to a subject in need thereof a therapeutically effective amount of a combination of cannabinoids x and y; wherein x is selected from the group consisting of: cannabidiol (CBD) and cannabidivarin (CBDV), y is selected from the group consisting of : delta-9-tetrahydrocannabinol (THC) and tetrahydrocannabinovarin (THCV) , and the ratio of x:y by weight is less than or equal to 19:1.
42. A method according to claim 41 wherein the combination of cannabinoids x and y is present in a pharmaceutical formulation as defined in any one of claims 1 to 40.
PCT/GB2005/002233 2004-06-08 2005-06-07 Pharmaceutical compositions for the treatment of disease and/or symptoms in arthritis WO2005120478A1 (en)

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EP05749393.4A EP1765314B1 (en) 2004-06-08 2005-06-07 Pharmaceutical compositions for the treatment of disease and symptoms in rheumatoid arthritis
US11/628,814 US20080139667A1 (en) 2004-06-08 2005-06-07 Pharmaceutical Compositions For the Treatment of Disease and/or Symptoms in Arthritis
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ES05749393T ES2735229T3 (en) 2004-06-08 2005-06-07 Pharmaceutical compositions for the treatment of disease and symptoms in rheumatoid arthritis
US15/068,707 US20160361290A1 (en) 2004-06-08 2016-03-14 Pharmaceutical compositions for the treatment of disease and/or symptoms in arthritis
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