certain antihistamines should be avoided by men that have prostate problems. older antihistamines like diphenhydramine and chlorpheniramine can aggravate the symptoms of bph. these older antihistamines can also cause drowsiness which could be a problem if you already experience drowsiness from the ms contin. you should talk to your pharmacist who can help you find an antihistamine that will not interfere with your condition or your current medications.
is it safe to take an antihistamine while taking ms contin and rapaflo?