Can i take zoloft , phentermine, and topamax (topiramate) together?

Wouldn't do it: Combining zoloft (sertraline) with Phentermine risks serotonin syndrome. It's rare but dangerous -- may include confusion, hallucinations, seizures, blood pressure changes, increased heart rate, fever, sweating, shivering or shaking, blurred vision, muscle spasm or stiffness, tremor, incoordination, stomach cramp, nausea, vomiting, and diarrhea.