# Randomized Controlled Trial on the Treatment Effects of Melatonin and Light Therapy on Delayed Sleep Phase Syndrome

> **NCT00834886** · PHASE4 · COMPLETED · sponsor: **University of Bergen** · enrollment: 40 (actual)

## Conditions studied

- Delayed Sleep Phase Syndrome

## Interventions

- **DIETARY_SUPPLEMENT:** Melatonin
- **OTHER:** Bright light
- **OTHER:** Placebo red light
- **OTHER:** Placebo capsule

## Key facts

- **NCT ID:** NCT00834886
- **Lead sponsor:** University of Bergen
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2008-10
- **Primary completion:** 2012-01
- **Final completion:** 2012-01
- **Target enrollment:** 40 (ACTUAL)
- **Last updated:** 2016-03-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00834886

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00834886, "Randomized Controlled Trial on the Treatment Effects of Melatonin and Light Therapy on Delayed Sleep Phase Syndrome". Retrieved via AI Analytics 2026-06-03 from https://api.ai-analytics.org/clinical/NCT00834886. Licensed CC0.

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