Will taking dexedrine (dextroamphetamine) harm my peptic ulcer?

Probably not: Dexedrine (dextroamphetamine) may interact with some medications that are used to treat peptic ulcer disease - thereby increasing the side effects of dexedrine (dextroamphetamine). If you don't eat as often when taking dexedrine (dextroamphetamine), this may be a risk factor for increased gastric mucosal irritation/inflammation - usually subject to other co-risk factors. Dexedrine (dextroamphetamine) in and of itself does not cause peptic ulcer disease.