Condition
    Limited
    Effectiveness 2/5

    Melatonin for Heartburn & Acid Reflux

    Melatonin is a plausible reflux adjunct because the gut produces far more of it than the pineal gland does, and it appears to influence sphincter tone. Evidence is early and should not displace meal timing and weight management.

    Overview

    Melatonin is a plausible reflux adjunct because the gut produces far more of it than the pineal gland does, and it appears to influence sphincter tone. Evidence is early and should not displace meal timing and weight management.

    Verdict

    Mixed evidence

    Small trials suggest melatonin improves lower esophageal sphincter pressure and heartburn scores, but the studies are few and mostly from a single research group.

    How It Works

    Melatonin receptors are present throughout the gastrointestinal tract. Animal and small human work suggests it raises lower esophageal sphincter pressure, reduces nitric oxide mediated sphincter relaxation, and may protect the esophageal mucosa against acid-induced injury.

    Dosing & Protocol

    Typical dose

    Recommended dose
    3 to 6 mg taken 30 to 60 minutes before bed
    Expected timeframe
    2 to 4 weeks for symptom change

    Protocol

    notes
    Take 30 to 60 minutes before bed. Start at 3 mg; higher doses are not clearly better and increase grogginess.
    dosage
    3 to 6 mg at night
    duration
    Trial for 4 to 8 weeks, then reassess

    Evidence

    What the studies say

    A handful of randomised trials, several from the same group, found 3 to 6 mg of melatonin at night improved heartburn scores compared with placebo, and combination trials with omeprazole reported faster symptom relief than omeprazole alone. Trial sizes were small, follow-up short, and independent replication is lacking. No trial has shown healing of erosive esophagitis with melatonin alone, so it should be positioned as an adjunct while structural measures do the heavy lifting.

    Regression of gastroesophageal reflux disease symptoms using dietary supplementation with melatonin, vitamins and aminoacids: comparison with omeprazole

    Score: 5/10
    2006
    rct
    n=351

    Pereira RS

    Complete regression of GERD symptoms occurred in 100% of patients that used the dietary supplementation, and in 65.7% of the patients treated with omeprazole.

    View source

    Is the addition of sublingual melatonin to omeprazole superior to omeprazole alone in the management of gastroesophageal reflux disease symptoms: a clinical trial

    Score: 6/10
    2023
    rct
    n=72

    Malekpour H, et al.

    The combination of sublingual melatonin (3 mg/day) with omeprazole (20 mg/day) may be more effective than omeprazole (20 mg/day) alone in the treatment of gastroesophageal reflux disease.

    View source

    Is the addition of sublingual melatonin to omeprazole superior to omeprazole alone in the management of gastroesophageal reflux disease symptoms: a clinical trial

    Score: 7/10
    2023
    rct
    n=78

    Malekpour H, Noori A, Abdi S +2 more

    The present study aimed to investigate whether the addition of sublingual melatonin to omeprazole was effective in the treatment of gastro gastroesophageal reflux disease symptoms.

    View source

    Regression of gastroesophageal reflux disease symptoms using dietary supplementation with melatonin, vitamins and aminoacids: comparison with omeprazole

    Score: 5/10
    2006
    rct
    n=351

    Pereira RS

    Melatonin has known inhibitory activities on gastric acid secretion and nitric oxide biosynthesis.

    View source

    Safety

    Caveats

    Evidence is limited and concentrated in a small number of trials. Melatonin can cause morning grogginess and vivid dreams, and interacts with sedatives and anticoagulants. It does not treat erosive esophagitis.

    Less likely to help if

    People whose reflux is driven mainly by a large hiatal hernia, obesity or late heavy meals typically see little benefit until those factors are addressed.

    Medical Disclaimer

    The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.

    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.