What to know

No supplement replaces a sustainable eating pattern, activity, sleep, and appropriate medical care. “Natural” weight-loss products can still cause side effects or interact with medicines. For related guidance, read Foods That Can Support a Satisfying Weight-Loss Plan.

Evidence for many weight-loss supplements is limited, products vary, and FDA does not approve dietary supplements for safety and effectiveness before sale. A closely connected Healthy Pulse article covers Weight-Loss Plateaus.

Supporting illustration 1 for Weight-Loss Supplements: Evidence, Risks, and Safer Decisions

A practical approach

  • Treat rapid-loss and “fat burner” promises as warning signs.
  • Review the ingredient list and dose with a pharmacist or clinician.
  • Avoid combining multiple stimulant products.
  • Do not replace prescribed treatment or meals with supplements.
  • Report unexpected symptoms and stop the product while seeking advice.
Supporting illustration 2 for Weight-Loss Supplements: Evidence, Risks, and Safer Decisions

Safety and limits

Pregnancy, breastfeeding, heart or kidney disease, diabetes, high blood pressure, and prescription medicines can materially change supplement risk. Individual review is essential. Continue with Hormones and Weight for another practical perspective.

Supporting illustration 3 for Weight-Loss Supplements: Evidence, Risks, and Safer Decisions
Supporting illustration 4 for Weight-Loss Supplements: Evidence, Risks, and Safer Decisions
Supporting illustration 5 for Weight-Loss Supplements: Evidence, Risks, and Safer Decisions

Sources and further reading