En klinisk undersøgelse af 7 normale, raske personer viste, at cimetidin, administreret som 400 mg to gange daglig, forøger den systemiske eksponering af metformin (AUC) med 50% og Cmax med 81%.
A study conducted in seven normal healthy volunteers showed that cimetidine, administered as 400 mg twice daily, increased metformin systemic exposure (AUC) by 50% and Cmax by 81%.