Can morning light and melatonin double the power of antidepressants?
NCT ID NCT07120880
First seen Aug 12, 2026 · Last updated Aug 13, 2026 · Updated 1 time
Summary
This trial tests whether adding two 'chronotherapeutics'—bright light therapy in the morning and a slow-release melatonin pill at night—to standard antidepressants can better ease depression in adults who also have insomnia. About 184 people with major depression and sleep problems will receive these add-ons, alone or together, for 8 weeks. The goal is to see if this combination reduces depressive symptoms more than antidepressants alone, potentially offering a new strategy for the many patients who don't fully respond to medication.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Light therapy (10,000 lux for 30 minutes each morning) and extended-release melatonin 2 mg, taken one hour before bedtime, added to standard antidepressant treatment and sleep hygiene education.
- What this could lead to
- If effective, this combination could offer a simple, drug-adjacent way to boost antidepressant response and improve sleep, potentially helping the many people with depression who don't fully recover with medication alone.
- What could go wrong
- This is a mid-stage trial, so results may not hold up in larger, real-world settings. Light therapy carries a small risk of eye strain or headache, and melatonin may cause drowsiness or dizziness.
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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.
Contacts and locations
Locations
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Hôpital Bichat-Claude Bernard
RECRUITINGParis, 75018, France