I have been taking topamax since oct 1st and have been almost migraine free lost ALOT of weight though and had no appetite but, other than that i was fine. On the 4th dec i was diagnosed with pneumonia and after 7 antibiotics,several x-rays, painkillers, hospital visits blood tests i still have pneumonia. doctors did all the tests everything was ok, but recently i read that pneumonia is a rare side effect from topamax! For now i haven;t mentioned this to my gp ...should i ? In the the mean time i have been refered to a respitory specialist, please help your help would be much appreciated.