GI Health
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November 9, 2023

Melatonin for GERD: The Sleep Hormone's Role in Acid Reflux Relief

Written By
Brittney Bertagna RN
Medically Reviewed by
Updated On
January 14, 2025

Gastroesophageal reflux disease (GERD) is a common condition that affects many people worldwide, characterized by persistent heartburn, acid reflux, and other uncomfortable digestive symptoms. If you’ve ever experienced GERD, you know just how important finding relief is!

Traditionally managed with dietary changes, lifestyle modifications, and medications such as proton pump inhibitors (PPIs), GERD can significantly impact your quality of life. Emerging research is exploring a potential option: melatonin, a hormone better known for its role in regulating sleep cycles.

As we explore the science behind melatonin's potential effects, we’ll look at how this hormone might offer benefits for those with GERD: possibly soothing symptoms while enhancing sleep, with a different risk profile than traditional GERD medications.

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Melatonin: An Option for GERD Management

Melatonin is being studied for its potential use in managing gastroesophageal reflux disease (GERD). It is produced in the gastrointestinal tract and may have a protective effect on the mucosa by influencing gastric acid secretion and gastrin release, which could help support the function of the lower esophageal sphincter (LES). Clinical research suggests that the use of melatonin, either alone or in combination with the proton pump inhibitor (PPI) omeprazole, may lead to improvements in GERD symptoms such as heartburn and epigastric discomfort, as well as supporting the tone of the LES.

One randomized, single-blind clinical trial found that a combination of melatonin with other natural supplements was more effective than omeprazole alone in managing GERD. Furthermore, studies suggest that people with GERD may have lower melatonin levels compared to healthy controls, and supplementing with melatonin might help manage GERD symptoms through various mechanisms, including supporting a healthy inflammatory response, reducing oxidative stress, and protecting the lining of the esophagus.

Given this evidence, melatonin appears to be a promising agent in the management of GERD. However, it is essential to consult with a healthcare provider before starting any new treatment, as the research is still emerging, and melatonin supplements may interact with other medications or have contraindications in certain populations.

Melatonin Levels and GERD

Melatonin levels have been shown to be lower in GERD patients compared to healthy individuals, suggesting that a melatonin deficiency might contribute to the weakening of barrier mechanisms in the esophagus and duodenum. 

Compared to proton pump inhibitors (PPIs), melatonin may offer similar symptomatic relief for GERD without the associated risks of chronic kidney disease, cardiovascular disease, or increased heart attack risk that have been linked to long-term PPI use. 

Moreover, melatonin may influence gastric acid secretion and support the function of the lower esophageal sphincter, which are both important in managing GERD symptoms.

This suggests that melatonin could serve as a valuable alternative to conventional GERD treatments, especially considering the potential side effects and complications associated with long-term use of PPIs.

The antioxidant properties of melatonin, coupled with its ability to influence major GI tract functions, make it a compelling candidate for further research and clinical use in managing GERD.

How Much Melatonin Might Be Helpful for GERD? 

While each individual should receive a personalized plan that takes into account their medical history, research has shown that at doses of about 6 mg of melatonin taken at bedtime, GERD symptoms could be managed with little to no side effects for most. 

Increasing Melatonin Naturally

There are ways to naturally support your melatonin levels without taking supplements. To increase melatonin production naturally, consider the following strategies:

  1. Increase Sunlight Exposure: Daytime sunlight exposure helps maintain a healthy circadian rhythm, which can enhance melatonin production at night. Sunlight also stimulates the production of serotonin, a precursor to melatonin.
  2. Consume Melatonin-Rich Foods: Certain foods, especially nuts like pistachios and almonds, are high in melatonin. Additionally, pistachios have vitamin B6, which is essential for converting tryptophan to melatonin.
  3. Eat Calcium-Rich Foods: Calcium helps the brain use tryptophan to manufacture melatonin. Foods high in calcium include dairy products, leafy greens, and certain nuts and seeds.
  4. Reduce Evening Light Exposure: Exposure to light in the evening, especially blue light from screens, can inhibit melatonin production. Reducing screen time, using blackout curtains, and avoiding bright lights can help increase melatonin levels.
  5. Increase Relaxation and Manage Stress: Activities that promote relaxation, such as meditation, deep breathing, or a warm bath before bed, can help trigger the production of melatonin.

These natural approaches can support better sleep patterns and may have a positive impact on overall health. It's crucial to maintain a regular sleep schedule and create a sleep-friendly environment to enhance these effects. Always consult with a healthcare provider for personalized advice.

Potential Side Effects

When using melatonin for GERD management, it is generally safe for short-term use and is not associated with dependency, decreased response after repeated use, or a hangover effect, which are common concerns with many sleep medications. The most common side effects of melatonin include headache, dizziness, nausea, and daytime drowsiness.

Less common side effects might include vivid dreams or nightmares, short-term feelings of depression, irritability, stomach cramps, diarrhea, constipation, decreased appetite, urinary incontinence at night, increased risk of falls, increased risk of seizures, confusion or disorientation, mood swings, and reduced alertness.

It is essential to discuss with a healthcare provider before starting melatonin, especially if you have any health conditions or if you are taking other medications.

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Summary

To summarize, melatonin has shown potential as an option for managing gastroesophageal reflux disease (GERD). Melatonin is a hormone that, beyond regulating sleep, may play a role in supporting the gastrointestinal lining and influencing the motility of the GI tract. Research has indicated that melatonin can be safely used in the short term to help manage GERD symptoms, with suggested doses ranging from 3 mg to 6 mg daily.

Additionally, natural ways to support melatonin levels include getting more sunlight, consuming melatonin-rich foods such as nuts and calcium-rich foods, and reducing evening exposure to light, especially from screens.

These findings suggest that melatonin could be a beneficial addition to the management of GERD, with a dual role in supporting gastrointestinal health and sleep quality.

The information in this article is designed for educational purposes only and is not intended to be a substitute for informed medical advice or care. This information should not be used to diagnose or treat any health problems or illnesses without consulting a doctor. Consult with a health care practitioner before relying on any information in this article or on this website.

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