My friend who I mentioned earlier, she got kidney stones because of the
topamax. This is one of the serious
side-
effects that
topamax can cause, but it is a rare side-effect that only happens in some people. It can be avoided by most people as long as you drink and ENTIRE glass of water with every topamax pill you take. This is extremely important... never take topamax without water!!! But, for a very small number of people topamax can still cause kidney stones, which are extremely painful.