Metabolism and Nutrition Disorders: Common: Vitamin B12 decrease/deficiency (see Precautions).
Very rare: Lactic acidosis (see Precautions).
Nervous System Disorders: Common: Taste disturbance.
Gastrointestinal Disorders: Very common: Gastrointestinal disorders such as nausea, vomiting, diarrhoea, abdominal pain and loss of appetite. These undesirable effects occur most frequently during initiation of therapy and resolve spontaneously in most cases. A slow increase of the dose may also improve gastrointestinal tolerability.
Hepatobiliary Disorders: Very rare: Liver function tests abnormalities or hepatitis resolving upon Metformin discontinuation.
Skin and Subcutaneous Tissue Disorders: Very rare: Skin reactions such as erythema, pruritus, urticaria.
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