When can I stop taking Qsymia?

You can stop taking the prescription weight-loss medication Qsymia (phentermine and topiramate) if, after 6 months, it hasn't helped you lose at least 5% of your weight; in that case, a longer stretch on the drug is unlikely to be more successful. You can also stop taking it if its side effects become too severe or bothersome. While you're on Qsymia, you should call your doctor immediately if you become pregnant or experience any of the following serious side effects:
  • suicidal thoughts, depression or other mood changes
  • changes in vision
  • difficulty concentrating or remembering
  • confusion
  • problems with speech
  • loss of appetite
  • unusually weak or tired
  • fast or irregular heartbeat
  • low blood sugar
  • kidney stones
  • an allergic reaction
  • chest pain or chest tightness
  • difficulty breathing
  • vomiting
  • a change in your period (if you take birth control pills)
You should not stop taking Qsymia without talking with your doctor first. If you stop taking Qsymia suddenly, it can cause seizures. Your doctor will tell you how to gradually stop taking Qsymia to avoid seizures or other problems.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.