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Published on: 7/15/2026

Can antidepressants cause wait gain?

Can antidepressants cause weight gain? Yes, certain antidepressants are linked to weight gain, though the effect varies by medication type, dosage, and individual factors like metabolism, lifestyle, and genetics. Common culprits include tricyclic antidepressants, some SSRIs (such as paroxetine), and mirtazapine, while others like bupropion are more weight-neutral or may even cause weight loss.

If you're noticing weight changes on your medication—or experiencing other symptoms you can't explain—it's worth getting clarity before making any decisions. Stopping or switching antidepressants without guidance can be risky, but understanding what's driving your symptoms is the first step. Take a free, instant, online symptom check to explore possible causes and get personalized guidance on your next steps.

Reviewed for medical accuracy: 07/15/2026

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Explanation

Antidepressants are medicines used to help people feel better when they are sad or worried. Some of these medicines can make people gain weight.

Why Do Some Antidepressants Cause Weight Gain?

  1. Different Medicines: Not all antidepressants are the same. Some are more likely to cause weight gain than others.
  2. Body Changes: These medicines can change how our bodies work, like how we feel hungry or how we use energy.
  3. Person's Body: Each person is different, so while one person might gain weight on a certain medicine, another might not.

Which Antidepressants Might Cause Weight Gain?

  • Some older types of antidepressants are known to cause more weight gain.
  • Newer antidepressants might not cause as much weight gain, but it can still happen.

If you or someone you know is worried about weight gain from antidepressants, it is important to talk to a doctor. They can help find a medicine that works best. If you're experiencing concerning symptoms related to your medication, you can use our free AI symptom checker to better understand what you're experiencing before speaking with your healthcare provider.

(References)

  • Gill H, Gill B, El-Halabi S, Chen-Li D, Lipsitz O, Rosenblat JD, et al. (2020). Antidepressant Medications and Weight Change. Obesity (Silver Spring, Md.), 33022115.

  • Fava M. (2000). Weight gain and antidepressants. The Journal of clinical psychiatry, 10926053.

  • Mouawad M, Nabipur L, & Agrawal DK. (2025). Impact of Antidepressants on Weight Gain - PubMed - NIH. Archives of clinical and biomedical research, 40444017.

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