IL44992A - Composition comprising a tetracycline and chloramphenicol hemisuccinate - Google Patents

Composition comprising a tetracycline and chloramphenicol hemisuccinate

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Publication number
IL44992A
IL44992A IL44992A IL4499274A IL44992A IL 44992 A IL44992 A IL 44992A IL 44992 A IL44992 A IL 44992A IL 4499274 A IL4499274 A IL 4499274A IL 44992 A IL44992 A IL 44992A
Authority
IL
Israel
Prior art keywords
chloramphenicol
tetracycline
hemisuccinate
composition
water
Prior art date
Application number
IL44992A
Other versions
IL44992A0 (en
Inventor
M Stolar
Original Assignee
Abic Ltd
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 Abic Ltd filed Critical Abic Ltd
Priority to IL44992A priority Critical patent/IL44992A/en
Publication of IL44992A0 publication Critical patent/IL44992A0/en
Publication of IL44992A publication Critical patent/IL44992A/en

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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Description

A composition comprising a tetracycline and chloramphenicol hemisuccinate The present invention relates to a water-soluble solid composition containing as active ingredients a tetracycline and chloramphenicol hemisuccinate. (Tetracycline in connection with the present invention means any tetracycline of the tetracycline family, e.g. tetracycline proper, oxytetracycline and chlorotetracycline. ) The various tetracyclines, as well as chloramphenicol, have excellent anti-bacterial properties. Moreover, it is known that the action of chloramphenicol and of tetracycline on the growth of micro-organisms is additive in the sense that equipotent units of these antibiotics when added to each other, yield the same activity as an equal amount of each antibiotic alone, e.gV. they exhibit antimicrobial activity against E. Goli, Steph. aureus, Baci subtilis, Sarcina lutea, Klebsiella pneumonia.
Chloramphenicol is not soluble in water. Chloramphenicol hemisuccinate, which also is not water-soluble, is not active per se, but it is known that by way of acid hydrolysis in the stomach or by way of enzymatic hydrolysis in the blood, the active chloramphenicol is set free. The sodium salt of chloramphenicol hemisuccinate has already been used for injections prepared by adding saline to a lyophylised material. Said sodium salt can be prepared only by way of lyophylisation as otherwise it decomposes. Tetracyclines are soluble in water for a short time and thereafter preeipitate.
Veterinary medicines are usually admixed either in the food or with the drinking water. The preferred manner of administration is as part of the drinking water, for the following reasons: The administration of medicated food to sick animals is often unsafisfactory. In this state, of health, the appetite of the animals is reduced, so that they Bwallow a smaller amount of food than usual, and as a result the therapeutic doee of the medicine is less than the required one. On the other hand, a sick animal usually continues drinking water.
Moreover, it is very often desirable to inject veterinary medicines.
Therefore, it is desirable to find a possibility to apply a mixture of a tetracycline and chloramphenicol in the form of a solution.
There are known solutions comprising the above antibiotics in water-miscible organic solvents. However> these solutions are not satisfactory as they comprise quite expensive solvents and they have to be prepared by the manufacturer, i.e. to be transported in the form of a solution.
Moreover, there are known salts formed between stachio- derivatives metric amounts of certain tetracycline/and chloramphenicol hemisuccinate. However, these compounds have the drawback that they exist only in a fixed molar ratio (1:1) and further - - There are known water-soluble solutions of said anti- <φ biotics with certain borate complexes. However, these solutions have the drawbacks that they have to be prepared in a yery determined manner. Moreover, they have to be manufactured as a solution which is undesirable as set out above. Finally, it has been found in the last years that it is undesirable to utilise borate in the treatment of animals, as well as of human beings.
It has thus been desirable to find a free-flowing water soluble composition, comprising a tetracycline and chloramphenicol which being added to water, would instantaneously dissolve therein. Said composition should be easy to prepare, relatively cheap, be stable and not dangerous in its application.
The present invention thus consists in a water-soluble composition comprising tetracycline and chloramphenicol hemisuccinate, and a compound selected among a group comprising sodium and potassium carbonate; the ratio between the antibiotics and the carbonate being at least tetracycline: carbonate 1:1 and chloramphenicol hemisuecinate : carbonate 1.3:05.
All ratios and percentages are given herein in weight.
The ratio between the tetracycline and the chloramphenicol may be varied to a large extent according to the specific requirements, provided that there is sufficient carbonate to form the sodium and/or potassium salts.
It is sometimes desirable to add a filler substance and for this purpose it is convenient to use an excess of the It has been found that the above composition is stable for quite a long period and can, therefore t be stored and easily transported.
The new composition, according to the present invention, can be prepared by methods known per se, i.e. various by admixing the J_L ingredients.
The composition according to the present invention is soluble to such an extent that any therapeutic required dosage is dissolved instantaneously in water, Said aqueous solution is stable for at least 24 hours. It might be used as drinking water or as injection. The present invention thus also consists in the aqueous solution comprising the new composition according to the present invention.
The present invention will now be illustrated with reference to the following eamples without being limited by same. In all the examples, the various ingredients were put in a mixer, mixed therein together and then packed into containers. (All percentages are weight/weight ) .
Example 1 Oxytetracycline HC1 25.0$ Chloramphenicol hemisuccinate 3 ,0 Sodium carbonate 41.0 The storage stability of the packaged powders fcas tested at various elevated temperatures and the results obtained are shown in the following Table (all temperatures are in degrees TABLE , -≠ 1. Oxytetracycline HC1 in % 4° Room 40° 45° Temp.
Initial 25.5 2 months 25.4 25.4 3 months 25.5 25.4 25.6 25.2 2. Chloramphenicol Hemisuccinate (expressed as % of chloramphenicol) Initial 25.5 2 months 25.5 3 months 25.1 25.4 25.3 25.4 In order to prepare a 5$ and 10% solution for injection or 60 ml, respectively 20g. (&τά 40g. of the above powder were dissolved in 80 ml/ of sterile distilled water in a 120 ml sterile vial and thereafter shaken. The clear solution obtained remained stable for at least 24 hours.
Example 2 Tetracycline HC1 25 Chloramphenicol hemis¾ecinate 34% Sodium carbonate 41% Example 3 Chlortetracycline HC1 25% Chloramphenicol hemisuccinate 34% Potassium carbonate 41% Example 4 Oxytetracycline HC1 49$ Chloramphenicol hemxsuccxnate 1.3 Sodium carbonate 49.7% Example 5 Tetracycline HC1 20% Chloraphenicol hemisuccinate 34% Sodium carbonate; 46% Example 6 Chlortetracycline HC1 5% Chloramphenicol hemisuccinate 60% Sodium carbonate 35% Example 7 From the various powders illustrated in Examples 2-6 there were prepared 5%, 10% and 15% solutions in the same manner as described in Example 1. All these solutions were stable for at least 24 hours. - 7

Claims (5)

1. A water-soluble composition comprising a tetracycline and chloramphenicol hemisuccinate, and a compound selected among a group comprising sodium-and potassium carbonate; the ratio between the antibiotics and the carbonate being at least carbonate: tetracycline 1:1 and carbonate chloramphenicol hemisuccinate 5:1·3.
2. A water-soluble composition comprising a tetracycline and chloramphenicol hemisuccinate substantially as hereinbefore described with reference to the Examples.
3. An aqueous solution comprising a therapeutic dosage of the composition according to Claim 1 or 2.
4. An aqueous solution according to Claim 3 being drinking water for animals.
5. An aqueous solution according to Claim 3 being a solution for an injection. FOB THE APPLICANTS DR. YITZHAK HESS.
IL44992A 1974-06-10 1974-06-10 Composition comprising a tetracycline and chloramphenicol hemisuccinate IL44992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IL44992A IL44992A (en) 1974-06-10 1974-06-10 Composition comprising a tetracycline and chloramphenicol hemisuccinate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL44992A IL44992A (en) 1974-06-10 1974-06-10 Composition comprising a tetracycline and chloramphenicol hemisuccinate

Publications (2)

Publication Number Publication Date
IL44992A0 IL44992A0 (en) 1974-09-10
IL44992A true IL44992A (en) 1977-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
IL44992A IL44992A (en) 1974-06-10 1974-06-10 Composition comprising a tetracycline and chloramphenicol hemisuccinate

Country Status (1)

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IL (1) IL44992A (en)

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Publication number Publication date
IL44992A0 (en) 1974-09-10

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