Dear Ms.Sue, Thanks for asking! Micardis is a drug used for high blood pressure. The active ingredient of this medicine is telmisartan. From the literature and in my experience, I have never come across any patient putting on weight after starting telmisartan. The best way to confirm this is to consult with your physician, if there is no other obvious cause of weight gain and stop the medication to see if the weight gain problem subsides. Meanwhile you could be on an alternative anti-hypertensive agent.