In pooled studies of up to 1 year in duration comparing sitagliptin/ metformin to a sulphonylurea agent/ metformin, adverse reactions considered as drug-related reported in patients treated with sitagliptin 100 mg occurring in excess (> 0.2% and difference > 1 patient) of that in patients receiving the sulphonylurea agent are as follows: anorexia (Metabolism and nutritional disorders; frequency uncommon) and weight decreased (Investigations; frequency uncommon).