Can you take phentermine and topamax at the same time?

Topamx is classified as an anticonvulsant used to treat seizure activity, while phentermine is classied as an appetite suppressant. If they are prescribed by different doctors, make sure each doctor is aware of the combination you are taking. Ask your doctor about any concerns you have about mixing the two. Also ask your pharmacist for a print out of the medications and ask about drug/drug interactions. As long as you take them under a doctors supervision, I don't see any red flags regarding interactions. Phentermine is used for people that are obese, not someone who wants to lose a couple pounds. If the phentermine is not prescribed for YOU, then I would not take it.