Metformin glycinate salt for blood glucose control
First Claim
1. A salt which comprises metformin and glycinate, forming a metformin glycinate salt, N,N-dimethylimidodicarbonimidic diamide glycinate having the formula as follows:
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to metformin glycinate salt and pharmaceutical compositions thereof for the treatment of diabetes mellitus. The method includes administration of the metformin glycinate salt by various routes selected from oral, intravenous injectable, intramuscular injectable, nasal, intraperitoneal, or sublingual, in order to achieve a reduction in blood glucose levels. The invention further relates to the synthesis of a new 1,1-dimethylbiguanide glycinate salt, called Metformin Glycinate. The resulting salt exhibits advantages over other metformin salts. These advantages are due, in the first place, to the fact that the glycine counterion exhibits hypoglycemic effects by itself. Moreover, the salt exhibits more rapid absorption, reaching higher plasma concentrations than those produced with metformin hydrochloride.
48 Citations
20 Claims
- 1. A salt which comprises metformin and glycinate, forming a metformin glycinate salt, N,N-dimethylimidodicarbonimidic diamide glycinate having the formula as follows:
-
12. A method of producing the metformin glycinate salt, comprising the following steps:
-
a) preparing the solution of metformin hydrochloride; b) separating the hydrochloride counterion by passing a solution of metformin hydrochloride salt through ion-exchange column in order to produce free metformin; c) dissolving the free metformin in an aqueous medium; d) adding glycine to the aqueous medium at ambient temperature under constant stirring to obtain the resulting mixture of glycine and metformin; e) concentrating the resulting mixture; f) adding a solvent wherein glycine is insoluble is added until the excess thereof precipitates; g) filtering the mixture in order to eliminate the excess glycine; h) evaporating the resulting filtrate until a second precipitate is produced; and i) washing and purifying the second precipitate to obtain metformin glycinate salt. - View Dependent Claims (13, 19)
-
Specification