Pairing phentermine and topiramate – either as two separate pills or in the popular combined pill, Qsymia – carries an additional risk. Serious side effects of Qsymia include (11 ): 1. Birth defects (cleft lip/palate), if a woman gets pregnant while taking this medication​ 2. Increased heart rate or blood pressure​ 3. Suicidal thoughts or actions 4...

Yes – phentermine side effects are usually worst during the first days or week of treatment. In most patients, the body starts to return to normal with continued use of the medication. However, certain reactions, such as dry mouth, constipation, or increased heart rate, may last for longer. Thankfully, it’s relatively rare for patients to experienc...

Phentermine side effects can affect any patient at any time, but some factors make adverse reactions more likely. Taking phentermine for longer than recommended or prescribed, for example, increases the chances of adverse reactions. Phentermine is a short-term weight management tool (12 ). More specifically, the Food and Drug Administration (FDA) h...