Can a Weight-Loss drug stop obesity before it starts? new trial aims to find out

NCT ID NCT06905626

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether the drug Qsymia, combined with lifestyle coaching, can prevent obesity in 140 adolescents and young adults (ages 18-25) who are overweight (BMI 25-30) and have a family history of obesity. Participants will receive either Qsymia or a placebo, plus coaching on diet and exercise, for about one year. The main goal is to see if the drug helps maintain a healthy body mass index.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Qsymia (phentermine and topiramate extended-release)
What this could lead to
If successful, this could provide a proven way to prevent obesity in young people at high risk, reducing future health problems.
What could go wrong
This is a relatively small Phase 3 trial, and the drug may cause side effects. Results may not apply to all groups, and long-term safety is still being studied.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

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