Cimetidine In subjects who had received 21 days of 40 mg day racemic citalopram, combined administration of 400 mg day cimetidine for days resulted in an increase in citalopram AUC and Cmax of 43 and 39 respectively. Com Geriatrics Depression kaufen gunstigsten lexapro 12646 This very big study also included Citalopram. Additional studies to investigate the mechanism for this pathology have not been performed, and the potential significance of this effect in humans has not been established. Less serious Lexapro side effects may include: drowsiness, sleep problems insomnia mild nausea, gas, heartburn, upset stomach, weight decreased sex drive, impotence, or difficulty having an or dry mouth, yawning, ringing in your ears.