hi there,
one of the side effects of Topamax is glaucoma. Each drugs have its own side effects, every drug is a compromise. i take them because the benefits i get from them are much grater than the side effects i have to endure. You only have to be cautious for the first week you're taking Topamax--- or any drug. My personal strategy: I never started a new drug when I'm out of town, or traveling or having big exams - anything that could prevent me to reach the ER or the hospital.
good luck to you!