What happens if you take weight loss pills?

Apr 30, 2025 Source: Cainiu Health
Disease description:

I want to lose weight. I heard from a friend that there is a weight-loss medication that works pretty well, but I'm somewhat concerned about its side effects. I'd like to know what would happen after taking weight-loss pills?

Doctor's answer (1)
Dr. Yang Ziqi

Most weight loss medications help reduce weight by suppressing appetite, increasing metabolic rate, or blocking fat absorption. In the short term, some users may notice weight loss, but long-term reliance on weight loss drugs is not a healthy approach to losing weight.

Due to the mechanisms of weight loss drugs, many people may experience frequent urination, but this does not necessarily indicate significant weight loss effectiveness; rather, it could be one of the drug's side effects.

Long-term use of weight loss medications may cause symptoms such as loss of appetite and dizziness, mainly due to ingredients like fenfluramine, which can cause these side effects. Long-term use of fenfluramine may also lead to serious problems such as heart valve damage, lung disease, and hypertension.

Although weight loss drugs may produce short-term weight loss effects, their side effects cannot be ignored. Before considering using weight loss medications, it is essential to consult a qualified physician to assess individual health status and risks. A healthy diet combined with regular exercise remains a safer and more effective method for weight reduction. Doctors will recommend suitable weight-loss plans according to each patient's specific condition.