WO2019013658A1 - A pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof - Google Patents

A pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof Download PDF

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Publication number
WO2019013658A1
WO2019013658A1 PCT/PL2018/050029 PL2018050029W WO2019013658A1 WO 2019013658 A1 WO2019013658 A1 WO 2019013658A1 PL 2018050029 W PL2018050029 W PL 2018050029W WO 2019013658 A1 WO2019013658 A1 WO 2019013658A1
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Prior art keywords
zinc gluconate
group
inosine pranobex
solution
mixtures
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PCT/PL2018/050029
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French (fr)
Inventor
Hanna WAHL
Marek DĄBROWA
Anna OSTROWSKA
Małgorzata KOWALSKA - PARTEKA
Jarosław PASIŃSKI
Arkadiusz MADEJCZYK
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Aflofarm Farmacja Polska Sp. Z O.O.
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Application filed by Aflofarm Farmacja Polska Sp. Z O.O. filed Critical Aflofarm Farmacja Polska Sp. Z O.O.
Priority to AU2018301189A priority Critical patent/AU2018301189A1/en
Priority to EP18831595.6A priority patent/EP3651803A4/en
Priority to RU2020106791A priority patent/RU2778647C2/en
Priority to UAA202000918A priority patent/UA127658C2/en
Priority to US16/631,026 priority patent/US11135162B2/en
Publication of WO2019013658A1 publication Critical patent/WO2019013658A1/en

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    • 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
    • A61K9/08—Solutions
    • 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
    • A61K9/0087—Galenical forms not covered by A61K9/02 - A61K9/7023
    • A61K9/0095—Drinks; Beverages; Syrups; Compositions for reconstitution thereof, e.g. powders or tablets to be dispersed in a glass of water; Veterinary drenches
    • 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
    • A61K31/13—Amines
    • A61K31/133—Amines having hydroxy groups, e.g. sphingosine
    • 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
    • A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19—Carboxylic acids, e.g. valproic acid
    • A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid 
    • 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
    • A61K31/555—Heterocyclic compounds containing heavy metals, e.g. hemin, hematin, melarsoprol
    • 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
    • A61K31/70—Carbohydrates; Sugars; Derivatives thereof
    • A61K31/7042—Compounds having saccharide radicals and heterocyclic rings
    • A61K31/7052—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides
    • A61K31/706—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom
    • A61K31/7064—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom containing condensed or non-condensed pyrimidines
    • A61K31/7076—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom containing condensed or non-condensed pyrimidines containing purines, e.g. adenosine, adenylic acid
    • 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
    • A61K31/70—Carbohydrates; Sugars; Derivatives thereof
    • A61K31/7042—Compounds having saccharide radicals and heterocyclic rings
    • A61K31/7052—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides
    • A61K31/706—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom
    • A61K31/7064—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom containing condensed or non-condensed pyrimidines
    • A61K31/7076—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom containing condensed or non-condensed pyrimidines containing purines, e.g. adenosine, adenylic acid
    • A61K31/708—Compounds having saccharide radicals and heterocyclic rings having nitrogen as a ring hetero atom, e.g. nucleosides, nucleotides containing six-membered rings with nitrogen as a ring hetero atom containing condensed or non-condensed pyrimidines containing purines, e.g. adenosine, adenylic acid having oxo groups directly attached to the purine ring system, e.g. guanosine, guanylic acid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K33/00—Medicinal preparations containing inorganic active ingredients
    • A61K33/24—Heavy metals; Compounds thereof
    • A61K33/30—Zinc; Compounds thereof
    • 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
    • A61K47/02—Inorganic compounds
    • 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
    • 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
    • A61K47/12—Carboxylic acids; Salts or anhydrides thereof
    • 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
    • A61K47/14—Esters of carboxylic acids, e.g. fatty acid monoglycerides, medium-chain triglycerides, parabens or PEG fatty acid esters
    • 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
    • A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals

Definitions

  • the invention relates to a pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof.
  • a pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof.
  • the invention can be used in pharmacy.
  • a drug is known in the art by the name of Eloprine in the form of a syrup, produced by the company Polfarmex SA, whose composition comprises, in addition to inosine pranobex, also methyl parahydroxybenzoate, propyl parahydroxybenzoate, sucrose, monohydrate citric acid, sodium hydroxide, aroma and water.
  • a drug is known by the name of Groprinosin from the company Gedeon Richter Polska Sp . z o.o., containing the same active ingredient and adjuvants such as sucrose, sodium saccharin, methyl parahydroxybenzoate, propyl parahydroxybenzoate, purified water, glycerol, 96% ethanol and aroma.
  • a drug is known to contain said active ingredient by the name of Isoprinosine from the company Ewopharma International s.r.o. containing sucrose, methyl parahydroxybenzoate, propyl parahydroxybenzoate, sodium hydroxide, aroma, sodium citrate and purified water.
  • Another drug of the same form containing the same active ingredient is Neosine from the company Aflofarm Farmacja Polska Sp. z o.o., which contains additional adjuvants such as methyl parahydroxybenzoate, propyl parahydroxybenzoate, sucrose, citric acid, sodium hydroxide, propylene glycol, aroma and purified water.
  • a drug Pranosin from the company Galena is known to contain said active ingredient and, in addition, sucrose, methyl parahydroxybenzoate, propyl parahydroxybenzoate, sodium citrate, sodium hydroxide (pH needs to be determined) , raspberry flavour, purified water.
  • the international application WO2012096655A1 discloses a medicinal composition containing alkylglycerols , artemidin, common mushroom, chlorophyllin and inosine and zinc.
  • the first object of the invention is a pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate, characterised in that it contains a sweetener selected from the group of disaccharides, preferably sucrose or/and from the group of polyols, preferably maltitol, a solubilizer from the group of hydroxy alcohols or mixtures thereof, preferably propylene glycol, glycerol, preservatives selected from the group of parahydroxybenzoic acid esters and mixtures thereof, preferably methyl parahydroxybenzoate, propyl parahydroxybenzoate, a sweetener, preferably sodium saccharine or sucralose, and pH regulators in the range from 5,7 to 12,0, preferably aroma.
  • a sweetener selected from the group of disaccharides, preferably sucrose or/and from the group of polyols, preferably maltitol
  • a solubilizer from the group of hydroxy
  • composition of to the invention is characterised in that the pH regulators are selected from the group comprising sodium hydroxide and citric acid. It is also preferred for the composition of to the invention to be characterised in that it contains from 0.05% to 13% inosine pranobex and from 0.349% to 2.106% zinc gluconate. In a further preferred embodiment of the invention, the composition contains inosine pranobex and zinc gluconate in an amount of 500 mg/5 ml and 3.125 mg zinc ions/5 ml, respectively.
  • composition of to the invention contains methyl parahydroxybenzoate (m-paraben) in the range of 0.08 ⁇ 0.18% and propyl parahydroxybenzoate (p-paraben) in the range of 0.01 ⁇ 0.02%.
  • m-paraben methyl parahydroxybenzoate
  • p-paraben propyl parahydroxybenzoate
  • a second object of the invention is a method of preparation of the composition disclosed in the first object of the invention characterised in that it comprises: a) dissolving the sweetener in water; b) cooling the solution from step a) c) adding to the solution from step b) a solubilizer from the group of hydroxy alcohols or mixtures thereof; d) adding to the solution of step c) preservatives selected from the group of parahydroxybenzoic acid esters and mixtures thereof until dissolution e) cooling the solution from step d) f) adding the sweetener to the solution of step e) g) adding pH regulators; h) sequentially adding, until dissolution, inosine pranobex and then zinc gluconate, followed by cooling, and preferably adding the aroma.
  • the invention disclosed makes it possible to obtain a liquid form of the drug, which is characterised by stability despite the use of two active ingredients, and a better taste than medicinal products containing only inosine pranobex.
  • the invention relates to a liquid medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in an amount of 500 mg/5 ml and 3.125 mg zinc ions/5 ml respectively, a sweetener from the group of disaccharides , e.g. sucrose or from the group of polyols, e.g. maltitol, a solubilizer from the group of hydroxy alcohols or mixtures thereof, e.g. propylene glycol, glycerol, preservatives from the group of parahydroxybenzoic acid esters and mixtures thereof, e.g.
  • a sweetener from the group of disaccharides , e.g. sucrose or from the group of polyols, e.g. maltitol
  • a solubilizer from the group of hydroxy alcohols or mixtures thereof, e.g. propylene glycol, glycerol
  • preservatives from the group of
  • compositions of the medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in liquid form
  • the invention disclosed makes it possible to obtain a liquid form of the drug, which is characterised by stability despite the use of two active ingredients in liquid form, and a better taste than medicinal products containing only inosine pranobex.
  • Example no. 2 Development of a liquid form drug formulation for the combination of active ingredients of inosine pranobex and zinc gluconate - preliminary studies.
  • Example 2b Determination of the proportion of pH regulators and the pH range
  • compositions of samples 29 and 30 yielded a positive result of precipitate elimination in the medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in liquid form. Surprisingly, it was also found that the taste of the resulting product compared to the monoformulation containing only inosine pranobex is improved.
  • Example 3.1 Determination of the limit concentrations of pH regulators and the pH of the final product.
  • Table 7b A medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in a liquid form with a lower sucrose content with different pH and a constant content of sodium hydroxide
  • the next stage of research was to check the form of the medicinal product in a liquid form containing a combination of two active ingredients inosine pranobex and zinc gluconate using the minimum and maximum therapeutic doses of active ingredients.
  • technological samples were performed with the lowest amount of inosine pranobex and/or zinc gluconate and with the highest amount of inosine pranobex and/or zinc gluconate, and the product form was observed.
  • Tables 10 and 11 show the compositions of technological samples and observations.

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Abstract

The invention relates to a pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate, characterised in that it contains a sweetener selected from the group of disaccharides, preferably sucrose or/and from the group of polyols, preferably maltitol, a solubilizer from the group of hydroxy alcohols or mixtures thereof, preferably propylene glycol, glycerol, preservatives selected from the group of parahydroxybenzoic acid esters and mixtures thereof, preferably methyl parahydroxybenzoate, propyl parahydroxybenzoate, a sweetener, preferably sodium saccharine or sucralose, and pH regulators in the range from 5.7 to 12.0 preferably aroma, and a method of preparation thereof.

Description

A pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc
gluconate and a method of preparation thereof
The invention relates to a pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof. The invention can be used in pharmacy.
A drug is known in the art by the name of Eloprine in the form of a syrup, produced by the company Polfarmex SA, whose composition comprises, in addition to inosine pranobex, also methyl parahydroxybenzoate, propyl parahydroxybenzoate, sucrose, monohydrate citric acid, sodium hydroxide, aroma and water. A drug is known by the name of Groprinosin from the company Gedeon Richter Polska Sp . z o.o., containing the same active ingredient and adjuvants such as sucrose, sodium saccharin, methyl parahydroxybenzoate, propyl parahydroxybenzoate, purified water, glycerol, 96% ethanol and aroma. A drug is known to contain said active ingredient by the name of Isoprinosine from the company Ewopharma International s.r.o. containing sucrose, methyl parahydroxybenzoate, propyl parahydroxybenzoate, sodium hydroxide, aroma, sodium citrate and purified water. Another drug of the same form containing the same active ingredient is Neosine from the company Aflofarm Farmacja Polska Sp. z o.o., which contains additional adjuvants such as methyl parahydroxybenzoate, propyl parahydroxybenzoate, sucrose, citric acid, sodium hydroxide, propylene glycol, aroma and purified water. A drug Pranosin from the company Galena is known to contain said active ingredient and, in addition, sucrose, methyl parahydroxybenzoate, propyl parahydroxybenzoate, sodium citrate, sodium hydroxide (pH needs to be determined) , raspberry flavour, purified water. The international application WO2012096655A1 discloses a medicinal composition containing alkylglycerols , artemidin, common mushroom, chlorophyllin and inosine and zinc. Preliminary preformulation studies show that the combination of inosine pranobex and zinc gluconate in an aqueous solution triggers a chemical reaction yielding a precipitate inadmissible according to ( in) the assumptions made regarding the new formulation of the medicinal product and the unpleasant taste of the solution. During studies on the medicinal product with inosine pranobex and zinc gluconate in the form of an aqueous solution, the composition of the commercial medicinal product containing 500mg/5ml of inosine pranobex was reconstituted, and zinc gluconate was added. Likewise, a precipitate was observed that prevented the use of such formulation as the target pharmaceutical composition of the medicinal product. There is still a need to provide a pharmaceutical composition and a method of preparation thereof with inosine pranobex and zinc gluconate, which mediates proper functioning of the immune system, with its liquid form in the form of an aqueous solution, preferably a syrup, being free from precipitate and unpleasant taste. Surprisingly, the above problem has been solved by means of the invention disclosed.
The first object of the invention is a pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate, characterised in that it contains a sweetener selected from the group of disaccharides, preferably sucrose or/and from the group of polyols, preferably maltitol, a solubilizer from the group of hydroxy alcohols or mixtures thereof, preferably propylene glycol, glycerol, preservatives selected from the group of parahydroxybenzoic acid esters and mixtures thereof, preferably methyl parahydroxybenzoate, propyl parahydroxybenzoate, a sweetener, preferably sodium saccharine or sucralose, and pH regulators in the range from 5,7 to 12,0, preferably aroma. It is also preferred for the composition of to the invention to be characterised in that the pH regulators are selected from the group comprising sodium hydroxide and citric acid. It is also preferred for the composition of to the invention to be characterised in that it contains from 0.05% to 13% inosine pranobex and from 0.349% to 2.106% zinc gluconate. In a further preferred embodiment of the invention, the composition contains inosine pranobex and zinc gluconate in an amount of 500 mg/5 ml and 3.125 mg zinc ions/5 ml, respectively. It is also preferred for the composition of to the invention to be characterised in that it contains methyl parahydroxybenzoate (m-paraben) in the range of 0.08 ÷ 0.18% and propyl parahydroxybenzoate (p-paraben) in the range of 0.01 ÷ 0.02%.
A second object of the invention is a method of preparation of the composition disclosed in the first object of the invention characterised in that it comprises: a) dissolving the sweetener in water; b) cooling the solution from step a) c) adding to the solution from step b) a solubilizer from the group of hydroxy alcohols or mixtures thereof; d) adding to the solution of step c) preservatives selected from the group of parahydroxybenzoic acid esters and mixtures thereof until dissolution e) cooling the solution from step d) f) adding the sweetener to the solution of step e) g) adding pH regulators; h) sequentially adding, until dissolution, inosine pranobex and then zinc gluconate, followed by cooling, and preferably adding the aroma.
The invention disclosed makes it possible to obtain a liquid form of the drug, which is characterised by stability despite the use of two active ingredients, and a better taste than medicinal products containing only inosine pranobex.
Example no. 1 Method of preparation
The invention relates to a liquid medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in an amount of 500 mg/5 ml and 3.125 mg zinc ions/5 ml respectively, a sweetener from the group of disaccharides , e.g. sucrose or from the group of polyols, e.g. maltitol, a solubilizer from the group of hydroxy alcohols or mixtures thereof, e.g. propylene glycol, glycerol, preservatives from the group of parahydroxybenzoic acid esters and mixtures thereof, e.g. methyl parahydroxybenzoate (m-paraben in the range of 0.08÷0.18 %), propyl parahydroxybenzoate (p-paraben) in the range of 0.01÷0.02%), and a sweetener, e.g. sodium saccharin, sucralose, free of precipitate and characterised by a better taste than a product containing only one active -ingredient: inosine pranobex. For the above combination in liquid form, a product was developed with two main pharmaceutical compositions similar to each other. The pharmaceutical compositions of the medicinal product, syrup/oral solution are shown in Table 1:
Table 1. Pharmaceutical compositions of the medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in liquid form
Figure imgf000006_0001
The method of preparation for both pharmaceutical compositions is analogous and it is as follows:
Add sucrose into purified water and bring it to boil. Maintain the temperature for 2 ÷ 4 minutes. Then cool the solution. Add propylene glycol, stir. Add methyl parahydroxybenzoate and propyl parahydroxybenzoate to the solution and stir until the substance dissolves. Cool the solution. Add sodium saccharin and stir until the substance dissolves. Add citric acid and mix until the substance dissolves. Add sodium hydroxide, stir. Add the determined amount of inosine pranobex and stir until the substance dissolves. Add the determined amount of zinc gluconate and stir until the substance dissolves. Cool the solution. Add aroma, stir.
The invention disclosed makes it possible to obtain a liquid form of the drug, which is characterised by stability despite the use of two active ingredients in liquid form, and a better taste than medicinal products containing only inosine pranobex.
Example no. 2 Development of a liquid form drug formulation for the combination of active ingredients of inosine pranobex and zinc gluconate - preliminary studies.
At the preliminary stage of research on the medicinal product with inosine pranobex and zinc gluconate in liquid form, the composition of the commercial medicinal product containing inosine pranobex in a concentration of 500mg/5ml was reconstituted and zinc gluconate was added. A precipitate was observed .
Example 2a. Selection of buffer substance/pH regulator
The next stage of the research was to verify whether the precipitate forms appear in the aqueous solution of inosine pranobex and zinc gluconate in the presence of other buffering substances, (str 6) For this purpose, technological samples were prepared with the compositions shown in Table 2. The buffer system was selected so that the pH of the aqueous solution was approx . 6.0.
Table 2. Technological samples of an aqueous solution of inosine pranobex and zinc gluconate with differen buffer substances.
Figure imgf000008_0001
Surprisingly, it turned out that the aqueous solution of the combined active ingredients of inosine pranobex and zinc gluconate is clear only in the combination of citric acid and sodium hydroxide (sample 13) . Solutions prepared by combining the test active ingredients with other buffer substances did not yield a clear solution.
Example 2b. Determination of the proportion of pH regulators and the pH range
Further research involved the determination of the pH range of the aqueous solution of the combination of two active ingredients of inosine pranobex and zinc gluconate using different amounts of citric acid and sodium hydroxide. The process of preparation of technological samples consisted in the dissolution of citric acid and sodium hydroxide in purified water, after which inosine pranobex was added to the resulting solution and stirred until dissolution, then zinc gluconate was added and stirred mixed until dissolution. Tables 3÷5 show the compositions of technological samples together with observations .
Table 3. Technological samples of an aqueous solution of inosine pranobex and zinc gluconate with different contents of citric acid and a constant content of sodium hydroxide.
Figure imgf000010_0001
Table 4. Technological samples of an aqueous solution of inosine pranobex and zinc gluconate with different contents of sodium hydroxide and a constant content of citric acid.
Figure imgf000011_0001
Table 5. Technological samples of an aqueous solution of inosine pranobex and zinc gluconate with different contents of sodium hydroxide and of citric acid.
Figure imgf000012_0001
In the technological samples conducted of an aqueous solution of the combination of two active ingredients of inosine pranobex and zinc gluconate with a different content of citric acid and sodium hydroxide, turbidity of said solution or precipitation was observed. Surprisingly, it turned out that the use of citric acid in the range of 0.126g/100g - 0.40g/100g and sodium hydroxide in the range of 0.695/100g - 0.55g/100g yields a fluid form of the drug free from precipitate and turbidity. Example 3. Determination of the composition and technology of preparation of the medicinal product.
Since the use of a proportion of the other ingredients forming a liquid form of the drug such as in the monoformulation containing inosine pranobex proved ineffective, as, surprisingly, it was found that the addition of a small amount of zinc gluconate reduced solubility of both active ingredients in the liquid form of the drug, a composition of excipients was used experimentally, especially the proportion of propylene glycol and sucrose, which in the proportions listed below (Table 6) surprisingly yielded physical stability of the liquid form of the drug containing a combination of inosine pranobex and zinc gluconate .
Table 6. Technological samples of the medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in liquid form involving precipitate elimination.
Figure imgf000014_0001
Compositions of samples 29 and 30 yielded a positive result of precipitate elimination in the medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in liquid form. Surprisingly, it was also found that the taste of the resulting product compared to the monoformulation containing only inosine pranobex is improved.
Example 3.1 Determination of the limit concentrations of pH regulators and the pH of the final product.
The above observations from the tests to determine the proportion of pH regulators and the pH range were repeated on the finished medicinal product in a liquid form containing a combination of two active ingredients of inosine pranobex and zinc gluconate. For this purpose, a medicinal product with different pH was prepared and the form of the product was observed. Tables 7 (a and b) and 8 (a and b) show the composition and observations
Figure imgf000016_0001
Table 7b. A medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in a liquid form with a lower sucrose content with different pH and a constant content of sodium hydroxide
j Objective of the Determination c >f the effect of pH on the test: product with a lower amount of sucrose
Starting material Pa 36 Pa 37 Pa 38
Inosine pranobex 8.13 8.13 8.13
Zinc gluconate 0.353 0.353 0.353
Propylene glycol 8.0 8.0 8.0
Sucrose 40.0 40.0 40.0
Methyl
0.18 0.18 0.16
parahydroxybenzoate
0.02 0.02 0.018
parahydroxybenzoate
Citric acid 0.10 0.35 0.45
'Sodium hydroxide 0.22 0.22 0.22
Sodium saccharin 0.1 0.1 0.1
Banana flavour 0.05 0.05 0.05
Purified water ad 100 ad 100 ad 100
Form precipitate compliant precipitate
12.0 8.4 5.6 Table 8a. A medicinal product containing a combination of two active ingredients of inosine pranobex and zinc gluconate in a liquid form with a lower content of propylene glycol with different pH and a constant content of citric acid
1 Objective of the Determination of the effect of pH on the product test: with a lower amount of propylene glycol
Starting material Pa 39 Pa 40 Pa 41 Pa 42
Inosine pranobex 8.13 8.13 8.13 8.13
Zinc gluconate 0.353 0.353 0.353 0.353
Propylene glycol 4.0 4.0 4.0 4.0
Sucrose 45.0 45.0 45.0 45.0
Methyl
0.18 0.18 0.16 0.16
parahydroxybenzoate
Prop
0.02 0.02 0.018 0.018
para q.s.
Citri c acid 0.40 0.40 0.40
(0.48) q.s
Sodium hydroxide 0.22 0.22 q.s (3.93)
(1.96)
Sodium saccharin 0.1 0.1 0.1 0.1
Banana flavour 0.05 0.05 0.05 0.05
Purified water ad 100 ad 100 ad 100 ad 100
Clear
compliant compliant turbidity solution pH 5.7 5.9 10.8 11.9 Table 8b. A medicinal product containing a combination of two active substances of inosine pranobex and zinc gluconate in a liquid form with a lower content of propylene glycol with different pH and a constant content of sodium hydroxide
Figure imgf000019_0001
The presented results of observations of the medicinal product form in liquid form containing a combination of two active ingredients of inosine pranobex and zinc gluconate, it was observed that the product forms a precipitate below pH 5.7 and above 12.0. Surprisingly, it was found that only in the pH range above 5.7 and below 12.0 the product is stable, clear and free of precipitate and/or, for sodium hydroxide concentration in the range of 0.22g/100g - 3.71g/100g, equally preferably citric acid 0.35g/100g - 0.45g/100g
Example 3.2 Determination of the correct order of adding ingredients
Since in the course of research on the selection of proper proportions of ingredients forming formulations of the liquid form of the drug containing a combination of two active ingredients of inosine pranobex and zinc gluconate, it was observed that the order of adding ingredients affects the stability of the medicinal product, at the subsequent stage of research a series of technological samples were performed in order to identify the effect of the order of adding substances, especially buffer and active ingredients, on precipitate formation. For this purpose, technological samples were performed of the aqueous solution of inosine pranobex and zinc gluconate with pH regulators, in which active ingredients and excipients were added to the solution in different orders. Table 9 shows the compositions and the method of preparation. Table 9. Technological samples with different method of adding active ingredients and excipients
Figure imgf000021_0001
Surprisingly, it was found that despite maintaining the appropriated predetermined pH of the product and the proportion of ingredients added, the only correct order of adding active and buffer substances is presented in the sample 46. Surprisingly, it was found that buffer substances must be added and dissolved in the solution before the addition of the active ingredients . Example 3.3 Determination of the limit concentrations of the active ingredients used
The next stage of research was to check the form of the medicinal product in a liquid form containing a combination of two active ingredients inosine pranobex and zinc gluconate using the minimum and maximum therapeutic doses of active ingredients. For this purpose, technological samples were performed with the lowest amount of inosine pranobex and/or zinc gluconate and with the highest amount of inosine pranobex and/or zinc gluconate, and the product form was observed. Tables 10 and 11 show the compositions of technological samples and observations.
Table 10. The product tested in a liquid form (with a lower amount of propylene glycol) with different therapeutic doses of active ingredients
Figure imgf000023_0002
Table 11. The product tested in a liquid form (with a lower amount of sucrose) with different therapeutic doses of active ingredients
Figure imgf000023_0001
Figure imgf000024_0001
The technological samples performed demonstrated that the product with the lowest amounts of active ingredients of inosine pranobex and/or zinc gluconate in the product in liquid form is clear without precipitate. However, for a product with a lower amount of propylene glycol, it was surprisingly found that the use of more than 13.0% content of inosine pranobex and/or 1.606% of zinc gluconate, and in a medicinal product with a lower amount of sucrose and the use of more than 13.0% content of inosine pranobex and/or 2.106% content of zinc gluconate causes precipitate to form.

Claims

Claims
1. A pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate, characterised in that it contains a sweetener selected from the group of disaccharides, preferably sucrose or/and from the group of polyols, preferably maltitol, a solubilizer from the group of hydroxy alcohols or mixtures thereof, preferably propylene glycol, glycerol, preservatives selected from the group of parahydroxybenzoic acid esters and mixtures thereof, preferably methyl parahydroxybenzoate, propyl parahydroxybenzoate, a sweetener, preferably sodium saccharine or sucralose, and pH regulators in the range from 5.7 to 12,0, preferably aroma.
2. The composition according to claim 1 characterised in that the pH regulators are selected from the group comprising sodium hydroxide and citric acid.
3. The composition according to claim 1 or 2 characterised in that it contains from 0.05% to 13% inosine pranobex and from 0.349% to 2.106% zinc gluconate.
4. The composition according to any of the claims 1 to 3 , characterised in that it contains inosine pranobex and zinc gluconate in an amount of 500 mg/5 ml and 3.125 mg zinc ions/5 ml, respectively.
5. The composition according to any of the claims 1 to characterised in that it contains methyl parahydroxybenzoate paraben) in the range of 0.08 ÷ 0.18% and propyl parahydroxybenzoate (p-paraben) in the range of 0.01 ÷ 0.02%.
6. A method of preparation of the composition defined in claim 1 characterised in that it comprises: a) dissolving the sweetener in water; b) cooling the solution from step a) c) adding to the solution from step b) a solubilizer from the group of hydroxy alcohols or mixtures thereof; d) adding to the solution of step c) preservatives selected from the group of parahydroxybenzoic acid esters and mixtures thereof until dissolution e) cooling the solution from step d) f) adding the sweetener to the solution of step e) g) adding pH regulators; i) sequentially adding, until dissolution, inosine pranobex and then zinc gluconate, followed by cooling, and preferably adding the aroma.
PCT/PL2018/050029 2017-07-14 2018-06-21 A pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof WO2019013658A1 (en)

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EP18831595.6A EP3651803A4 (en) 2017-07-14 2018-06-21 A pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof
RU2020106791A RU2778647C2 (en) 2017-07-14 2018-06-21 Pharmaceutical composition in form of aqueous solution, preferably syrup, containing inosine pranobex and zinc gluconate, and its production method
UAA202000918A UA127658C2 (en) 2017-07-14 2018-06-21 A pharmaceutical composition in the form of an aqueous solution, preferably a syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof
US16/631,026 US11135162B2 (en) 2017-07-14 2018-06-21 Pharmaceutical composition in the form of an aqueous solution, 1A syrup, containing inosine pranobex and zinc gluconate and a method of preparation thereof

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