Liquid formulation of metformin

A liquid pharmaceutical composition which comprises a therapeutically effective amount of metformin, or its pharmaceutically acceptable salt, a sweetener that does not increase the blood glucose level of a subject after ingestion thereof, an alkyl hydroxyethylcellulose and a polyhydroxy alcohol in association with a pharmaceutically acceptable carrier, said sweetener being present in amounts ranging from about 40% to about 80% by weight, said alkyl hydroxyethylcellulose being present in amounts ranging from about 0.01% to about 5% by weight and said polyhydroxy alcohol being present in amounts ranging from about 5% to about 55% by weight.

A liquid pharmaceutical composition comprising a pharmaceutically effective amount of metformin or a salt thereof, a sweetening effective amount of a mixture of xylitol and saccharin or pharmaceutically acceptable salt thereof, and a mineral acid and bicarbonate salt, the acid and bicarbonate salt are present in an amount sufficient so that the pharmaceutical composition has a pH ranging from about 4.0 to about 9.0.