CN109010341A - A kind of compound oral solution and preparation method thereof containing dextromethorphan hydrobromide - Google Patents

A kind of compound oral solution and preparation method thereof containing dextromethorphan hydrobromide Download PDF

Info

Publication number
CN109010341A
CN109010341A CN201811264791.3A CN201811264791A CN109010341A CN 109010341 A CN109010341 A CN 109010341A CN 201811264791 A CN201811264791 A CN 201811264791A CN 109010341 A CN109010341 A CN 109010341A
Authority
CN
China
Prior art keywords
compound oral
acid
oral pharmaceutical
pharmaceutical solutions
dextromethorphan hydrobromide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811264791.3A
Other languages
Chinese (zh)
Inventor
张倩倩
何红燕
周静
罗琦
赵卿
霍立茹
李战
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Ji Medicine Polytron Technologies Inc
Original Assignee
Nanjing Ji Medicine Polytron Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Ji Medicine Polytron Technologies Inc filed Critical Nanjing Ji Medicine Polytron Technologies Inc
Priority to CN201811264791.3A priority Critical patent/CN109010341A/en
Publication of CN109010341A publication Critical patent/CN109010341A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/47Quinolines; Isoquinolines
    • A61K31/485Morphinan derivatives, e.g. morphine, codeine
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/13Amines
    • A61K31/135Amines having aromatic rings, e.g. ketamine, nortriptyline
    • A61K31/137Arylalkylamines, e.g. amphetamine, epinephrine, salbutamol, ephedrine or methadone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/12Carboxylic acids; Salts or anhydrides thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/26Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/0012Galenical forms characterised by the site of application
    • A61K9/0053Mouth and digestive tract, i.e. intraoral and peroral administration
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00Drugs for disorders of the respiratory system
    • A61P11/02Nasal agents, e.g. decongestants
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00Drugs for disorders of the respiratory system
    • A61P11/14Antitussive agents

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Medicinal Chemistry (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Otolaryngology (AREA)
  • Nutrition Science (AREA)
  • Physiology (AREA)
  • Biochemistry (AREA)
  • Molecular Biology (AREA)
  • Medicinal Preparation (AREA)

Abstract

The invention belongs to field of pharmaceutical preparations, and in particular to a kind of dextromethorphan hydrobromide and the compound oral solution of PHENYLEPHRINE HYDROCHLORIDE and preparation method thereof.Dextromethorphan hydrobromide is clinically widely used in the various types of coughs for the treatment of, neo-synephrine is vasoconstrictor, respiratory mucosa oedema can be reduced, increase the drainage of sinus cavities, this compound oral pharmaceutical solutions can be used for catching a cold caused cough, nose or throat is itched, shed tears, having a stuffy nose, reducing nasal meatus swelling.

Description

A kind of compound oral solution and preparation method thereof containing dextromethorphan hydrobromide
Technical field
The invention belongs to field of pharmaceutical preparations, and in particular to deoxygenate adrenal gland containing dextromethorphan hydrobromide and hydrochloric acid to a kind of The compound oral solution and preparation method thereof of element.
Technical background
Dextromethorphan hydrobromide is a kind of central antitussive, mainly inhibits the coughing centre of medulla oblongata and plays a role, leads to The sensibility for reducing intrapulmonary sensory nerve is crossed, under therapeutic dose, the effect of unrestraint breathing and respiratory mucosa secretion, not exclusively Inhibit cough reflex, without additive, clinic is mainly used for dry cough caused by flu and a variety of causes or has phlegm and excessively frequent Cough caused by acute cough is a kind of safely and effectively antitussive medicine, and the affinity of dextromethorphan hydrobromide and its receptor is lower, controls Adverse reaction is less under treatment dosage, and safe range is wide, and neural and Psychotoxicity and cardiovascular response are seldom, is used for a long time without habituation Property and tolerance, children and old man can be used, also have and do not increase fetus terateger rate using this product during document report gestation;
PHENYLEPHRINE HYDROCHLORIDE be ɑ 1-ADR excitomotor, it is very faint to the effect of β-ADR, act on it is similar to NA but It is weaker, but since chemical property stablizes event persistent, predominantly vasoconstriction, increase blood pressure;It is mucocutaneous, internal organ such as kidney It is reduced with the blood flow of lung and four limbs.It is a kind of powerful vasoconstrictor, is used as nasal decongestant and electrocardio agent, goes Oxygen adrenaline also results in Pulmonary Vascular contraction and subsequent pulmonary artery pressure increases, the vessel retraction under respiratory mucosa Oedema can be reduced, the drainage of sinus cavities is increased.
The current product of dextromethorphan hydrobromide has tablet, capsule etc., and it is husky containing the right U.S. of hydrobromic acid that the present invention relates to one kind Sweet smell is free of pigment in the compound oral solution, while antioxidant is added with the compound oral solution of PHENYLEPHRINE HYDROCHLORIDE, shows Work reduces chemical explanation.Compared with other solid dosage forms, two kinds of drugs are significant in efficacy under therapeutic effect, and this product water solubility is good Well, the advantages that Small side effects have convenient to take, compliance height, are conveniently adjusted dosage is especially suitable for children and the elderly's clothes With;It joined corrigent appropriate in this oral administration solution simultaneously, can suitably cover the poor taste of drug, substantially increase children And the compliance of the elderly's medication.
Summary of the invention
It is an object of the invention to: a kind of dextromethorphan hydrobromide without pigment is provided and PHENYLEPHRINE HYDROCHLORIDE is multiple Square oral solution formulation and preparation method thereof.
Wherein, every 1ml contains dextromethorphan hydrobromide 0.5-2mg and PHENYLEPHRINE HYDROCHLORIDE 0.5-2mg, and antioxidant contains Amount is 5-20mg.
Oral administration solution pH of the invention is 2.5-6.5, and preferably pH is 3.0-5, and more preferable pH is 3.5.The inventors discovered that The compound oral liquid is more stable at low ph conditions, especially in the case where using low content buffer as pH adjusting agent, sample Product are more stable.
The pH adjusting agent can be organic or inorganic edible acid and its salt.The organic or inorganic edible acid is selected from One of citric acid and its salt, potassium hydroxide, sodium hydroxide, phosphoric acid and its salt form are several.Preferably citric acid and its The form of salt forms buffer solution.
The bacteriostatic agent is benzoic acid, sodium benzoate, one of sorbic acid, potassium sorbate or several.
The corrigent is in sucrose, Sucralose, Steviosin, saccharin sodium, sorbierite, maltitol and mannitol It is one or several kinds of;Refiner essence is added in solution simultaneously, increases aromatic odor, selectable essence fruit essence, strawberry One or more of essence, orange essence, lemon extract, flavoring pineapple essence, sweetener, fragrant refiner be able to solve patient according to From property, children, infant are easier to receive.
The solvent is by one or several kinds of in water, ethyl alcohol, propylene glycol, glycerol.It is preferred that water, propylene glycol, glycerol form Double solvents.
Another aspect of the present invention provides a kind of compound oral containing dextromethorphan hydrobromide and PHENYLEPHRINE HYDROCHLORIDE The preparation method of solution includes the following steps: to take suitable purified water, pH adjusting agent is added, stirs and be added to after being completely dissolved Dextromethorphan hydrobromide and PHENYLEPHRINE HYDROCHLORIDE;After adding corrigent, bacteriostatic agent dissolution completely, refiner, molten is added Agent is uniformly mixed;Finally it is settled to full dose with purified water, after filtering to obtain the final product.
The utility model has the advantages that
The present invention contains dextromethorphan hydrobromide and corrigent, mouth is added in the compound oral solution of PHENYLEPHRINE HYDROCHLORIDE Sense preferably, is particularly suitable for children.
The present invention uses pH adjusting agent buffer system, makes the pH stable of product, increases bacteriostatic agent, can prevent microorganism Growth, significantly reduces chemical degradation.
The compound oral stability of solution of the present invention from the dextromethorphan hydrobromide and PHENYLEPHRINE HYDROCHLORIDE is high, Antioxidant is added, significantly reduces chemical degradation.
It is provided by the invention to prepare work containing the compound oral solution of dextromethorphan hydrobromide and PHENYLEPHRINE HYDROCHLORIDE Skill is simple, quality controllable, low production cost, is suitble to large-scale production.
Specific embodiment
Embodiment 1
Preparation process:
It takes the purified water of oral administration solution total volume 25% in liquid dispensing tank, adds after recipe quantity sodium citrate stirring and dissolving is added Enter recipe quantity dextromethorphan hydrobromide, PHENYLEPHRINE HYDROCHLORIDE stirring and dissolving;Sequentially add sodium hydrogensulfite, edetic acid(EDTA) two After sodium, acesulfame potassium, sodium benzoate dissolution completely, propylene glycol stirring and dissolving is added, it is molten to sequentially add essence, 80% maltose Liquid, stirring to solution are clarified, and weigh vitamin and purified water is added to be configured to 20% vitamin c solution, be added into above-mentioned solution, Stirring.Different pH value are adjusted to 20% citric acid solution of pH adjusting agent, 2.5,3.0,3.98,4.96,5.98,6.5.Finally use Purified water is settled to enough.
Embodiment 2
Preparation process:
It takes the purified water of oral administration solution total volume 25% in liquid dispensing tank, adds after recipe quantity sodium citrate stirring and dissolving is added Enter recipe quantity dextromethorphan hydrobromide, PHENYLEPHRINE HYDROCHLORIDE stirring and dissolving;Sequentially add sodium metabisulfite, edetic acid(EDTA) two After sodium, acesulfame potassium, sodium benzoate dissolution completely, propylene glycol stirring and dissolving is added, it is molten to sequentially add essence, 80% maltose Liquid, stirring to solution are clarified, stirring.Then pH to 3.5 is adjusted with 20% citric acid solution of pH adjusting agent.Finally use purified water It is settled to enough.
Embodiment 3
Preparation process:
It takes the purified water of oral administration solution total volume 25% in liquid dispensing tank, sequentially add sodium citrate, dextromethorphan, deoxidation Adrenaline, citric acid (1/3 recipe quantity).Survey pH about 3.4 or so, sequentially add natrium adetate, acesulfame potassium, sodium benzoate, Propylene glycol, 2/3 recipe quantity citric acid, essence, pigment, 80% maltitol solution, measurement pH.Finally foot is settled to purified water Amount.
The above various embodiments sample and commercially available product are respectively placed in 30 DEG C, 40 DEG C of illumination (4500 ± 500lx), high temperature Under the conditions of carry out primary stability test, the results showed that be not added containing pigment and antioxidant in the embodiment of the present invention 3, Impurity growth trend is significantly greater than other embodiments sample.Illustrate containing dextromethorphan hydrobromide and PHENYLEPHRINE HYDROCHLORIDE Antioxidant is added in compound oral solution can improve its stability, and the degradation of its principal component is effectively reduced.
Illumination (4500 ± 500lx) carries out primary stability test result under the conditions of 40 DEG C, 30 DEG C of high temperature and is shown in Table 1, table 2, table 3:
Table 1
Table 2
Table 3.

Claims (9)

1. a kind of compound oral pharmaceutical solutions characterized by comprising dextromethorphan hydrobromide, PHENYLEPHRINE HYDROCHLORIDE and Antioxidant, the compound oral pharmaceutical solutions are free of pigment.
2. compound oral pharmaceutical solutions according to claim 1, it is characterised in that: the dextromethorphan hydrobromide content is 0.5-2mg/ml, PHENYLEPHRINE HYDROCHLORIDE content be 0.5-2mg/ml, antioxidant content 5-20g/ml.
3. compound oral pharmaceutical solutions according to claim 1, it is characterised in that: the antioxidant is selected from vitamin C, Gallic acid third lipoprotein, sodium pyrosulfite, one or more of sodium hydrogensulfite.
4. compound oral pharmaceutical solutions according to claim 1, it is characterised in that: the compound oral pharmaceutical solutions are into one Step includes 0.1% pH adjusting agent, 0.4% bacteriostatic agent, 0.01% complexing agent and 75% corrigent.
5. compound oral pharmaceutical solutions according to claim 4, it is characterised in that: the pH adjusting agent be selected from tartaric acid, One or more of citric acid, fumaric acid, malic acid, maleic acid, hydrochloric acid, phosphoric acid and its salt.
6. compound oral pharmaceutical solutions according to claim 4, it is characterised in that: the bacteriostatic agent is selected from sorbic acid, mountain The one or more of potassium sorbate, benzoic acid and its salt.
7. compound oral pharmaceutical solutions according to claim 4, it is characterised in that: the complexing agent is selected from tartaric acid, gathers The one or more of acrylic acid, sodium alginate, triethanolamine, natrium adetate.
8. compound oral pharmaceutical solutions according to claim 4, it is characterised in that: the corrigent be selected from fruit essence, Strawberry essence, orange essence, lemon extract, flavoring pineapple essence, sucrose, Steviosin, saccharin sodium, sorbierite, maltitol and sweet dew One or more of alcohol.
9. a kind of preparation method of the compound oral solution containing dextromethorphan hydrobromide and PHENYLEPHRINE HYDROCHLORIDE, feature It is, comprising the following steps:
(1) appropriate purified water is taken, pH adjusting agent is first added, dextromethorphan hydrobromide is added to after dissolving for stirring and hydrochloric acid deoxygenates kidney Upper parathyrine;
(2) antioxidant and other auxiliary materials are added, is stirred evenly;
(3) pH adjusting agent is added, is adjusted to pH2.5-6.5.;
(4) it is settled to full dose with purified water, it is filling.
CN201811264791.3A 2018-10-29 2018-10-29 A kind of compound oral solution and preparation method thereof containing dextromethorphan hydrobromide Pending CN109010341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811264791.3A CN109010341A (en) 2018-10-29 2018-10-29 A kind of compound oral solution and preparation method thereof containing dextromethorphan hydrobromide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811264791.3A CN109010341A (en) 2018-10-29 2018-10-29 A kind of compound oral solution and preparation method thereof containing dextromethorphan hydrobromide

Publications (1)

Publication Number Publication Date
CN109010341A true CN109010341A (en) 2018-12-18

Family

ID=64614221

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811264791.3A Pending CN109010341A (en) 2018-10-29 2018-10-29 A kind of compound oral solution and preparation method thereof containing dextromethorphan hydrobromide

Country Status (1)

Country Link
CN (1) CN109010341A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110279695A (en) * 2019-08-07 2019-09-27 北京博达绿洲医药科技研究有限公司 It is a kind of to treat pharmaceutical compositions of cold symptoms such as runny nose, nasal obstruction and its preparation method and application
CN110302149A (en) * 2019-08-07 2019-10-08 北京博达绿洲医药科技研究有限公司 A kind of suitable 4-11 years old children taking anti-cold medicine and preparation method thereof
CN114159387A (en) * 2021-12-10 2022-03-11 江苏汉晨药业有限公司 Dextromethorphan hydrobromide oral solution
CN117017993A (en) * 2023-10-07 2023-11-10 山东则正医药技术有限公司 Compound paracetamol and renin pharmaceutical composition for children, preparation and preparation process thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070249566A1 (en) * 2006-04-21 2007-10-25 The Procter & Gamble Company Compositions and methods useful for treatment of respiratory illness
WO2012018742A2 (en) * 2010-08-01 2012-02-09 Trinity Laboratories, Inc. Dextromethorphan antitussive compositions
CN103565735A (en) * 2013-09-30 2014-02-12 北京万全德众医药生物技术有限公司 Oral liquor containing dextromethorphan hydrobromide as well as preparation method thereof
CN104546671A (en) * 2006-07-14 2015-04-29 惠氏公司 Enhanced stability phenylephrine liquid compositions
CN105982897A (en) * 2015-02-13 2016-10-05 北京韩美药品有限公司 Liquid preparation, and preparation method and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070249566A1 (en) * 2006-04-21 2007-10-25 The Procter & Gamble Company Compositions and methods useful for treatment of respiratory illness
CN104546671A (en) * 2006-07-14 2015-04-29 惠氏公司 Enhanced stability phenylephrine liquid compositions
WO2012018742A2 (en) * 2010-08-01 2012-02-09 Trinity Laboratories, Inc. Dextromethorphan antitussive compositions
CN103565735A (en) * 2013-09-30 2014-02-12 北京万全德众医药生物技术有限公司 Oral liquor containing dextromethorphan hydrobromide as well as preparation method thereof
CN105982897A (en) * 2015-02-13 2016-10-05 北京韩美药品有限公司 Liquid preparation, and preparation method and application thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110279695A (en) * 2019-08-07 2019-09-27 北京博达绿洲医药科技研究有限公司 It is a kind of to treat pharmaceutical compositions of cold symptoms such as runny nose, nasal obstruction and its preparation method and application
CN110302149A (en) * 2019-08-07 2019-10-08 北京博达绿洲医药科技研究有限公司 A kind of suitable 4-11 years old children taking anti-cold medicine and preparation method thereof
CN110279695B (en) * 2019-08-07 2022-04-08 北京博智绿洲医药科技有限公司 A pharmaceutical composition for treating common cold with symptoms of watery nasal discharge and nasal obstruction, and its preparation method and application
CN114159387A (en) * 2021-12-10 2022-03-11 江苏汉晨药业有限公司 Dextromethorphan hydrobromide oral solution
CN114159387B (en) * 2021-12-10 2022-08-19 江苏汉晨药业有限公司 Dextromethorphan hydrobromide oral solution
CN117017993A (en) * 2023-10-07 2023-11-10 山东则正医药技术有限公司 Compound paracetamol and renin pharmaceutical composition for children, preparation and preparation process thereof
CN117017993B (en) * 2023-10-07 2024-01-26 山东则正医药技术有限公司 Compound paracetamol and renin pharmaceutical composition for children, preparation and preparation process thereof

Similar Documents

Publication Publication Date Title
US10238640B2 (en) Pharmaceutical suspension composition
CN109010341A (en) A kind of compound oral solution and preparation method thereof containing dextromethorphan hydrobromide
US8093408B2 (en) Antidepressant oral pharmaceutical compositions
US20100297220A1 (en) Pharmaceutical Formulation And Method For Treating Acid-Caused Gastrointestinal Disorders
NO175131B (en) Process for preparing a resin adsorbate of ranitidine
US8455667B2 (en) Duloxetine compositions in the form of a powder for suspension in a liquid
CN104784157B (en) A kind of montelukast oral membrane agent of stabilization
CN112334134A (en) Amlodipine formulation
JP6417480B2 (en) Tadalafil oral disintegration film and method for producing the same
IL148691A (en) Pharmaceutical compositions containing ciclesonide
CN111773203A (en) Preparation process of phenylephrine hydrochloride-containing composition
EP2926816A1 (en) Pharmaceutical composition comprising desloratadine and prednisolone and use thereof
CN108685876B (en) Oral film-shaped pharmaceutical composition containing risperidone
WO2019091082A1 (en) Solution preparation for aerosol inhalation of carbocisteine, and preparation method therefor
TW592725B (en) Galantamine oral solution
CN109984996A (en) Entecavir oral administration solution and preparation method thereof
JP3717189B2 (en) Analgesic anti-inflammatory agent
WO2019075127A1 (en) Midodrine hydrochloride oral solution and uses thereof
CN113413365B (en) Stable faviravir oral solution preparation and preparation method thereof
CN115715758B (en) Phloroglucinol oral liquid and production method thereof
CN114432272B (en) Orosity membrane, racecadotril orosity membrane agent and preparation method thereof
CN101427999B (en) Frusemide oral solution and method of producing the same
WO2022247609A1 (en) Tizanidine liquid preparation and use thereof
CN116763726A (en) Cetirizine hydrochloride oral solution and preparation method thereof
WO2019242764A1 (en) Application of glycosides in the preparation of drugs for preventing and treating diabetes complications

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20181218