Deglycyrrhizinated Licorice Supplement: Benefits & Safety (2026)

Introduction: What Is Deglycyrrhizinated Licorice Supplement?

If you've ever dealt with persistent heartburn, acid reflux, or that uncomfortable burning sensation creeping up your throat after a meal, you've likely searched for natural alternatives to conventional antacids. One name that consistently surfaces in digestive health circles is deglycyrrhizinated licorice — commonly abbreviated as DGL. Deglycyrrhizinated licorice is a specialized extract of the licorice root (Glycyrrhiza glabra) that has had a compound called glycyrrhizin removed through a filtration process. This matters because glycyrrhizin is the component responsible for licorice's most concerning side effects, including elevated blood pressure, potassium depletion, and fluid retention. By removing it, DGL retains the beneficial compounds for digestive health while eliminating the risks associated with regular licorice consumption. In this comprehensive guide, you'll learn exactly how DGL works in the body, what scientific evidence supports its use for acid reflux, GERD, gastritis, and peptic ulcers, how to choose a quality product, proper dosage protocols, and critical safety considerations. Whether you're exploring DGL as an alternative to proton pump inhibitors or simply curious about this traditional remedy backed by modern research, this guide provides the evidence-based information you need.

How Does DGL Work? Mechanism of Action

Understanding how DGL exerts its effects requires a brief look at the physiology of your digestive tract. Your stomach and esophagus are protected by a mucosal lining — a layer of mucus and bicarbonate that shields underlying tissues from corrosive gastric acid. When this protective barrier weakens, acid can irritate the sensitive tissues, leading to heartburn, esophagitis, and ulcer formation.

Mucus Production and Mucosal Protection

DGL's primary mechanism centers on stimulating the production and secretion of gastric mucus. Research suggests that certain flavonoids and polysaccharides present in licorice root enhance mucus quality and quantity, creating a more robust physical barrier between stomach acid and the epithelial cells lining the esophagus and stomach. One study found that licorice-derived compounds increased mucus secretion in animal models by up to 40% within two hours of administration. This mucus-enhancing effect is particularly relevant for individuals with gastroesophageal reflux disease (GERD), where the esophagus lacks adequate protection against repeated acid exposure. The mucilaginous coating provided by DGL can help soothe irritated tissues and support the natural healing process.

Anti-Inflammatory Activity

Beyond physical barrier support, DGL exhibits notable anti-inflammatory properties. The flavonoid compounds in licorice root, including liquiritin and isoliquiritigenin, have demonstrated the ability to modulate inflammatory cytokines and reduce oxidative stress in gastrointestinal tissues. This dual-action approach — enhancing protection while reducing inflammation — positions DGL as a multifaceted digestive aid.

Impact on Gastric Emptying and Motility

Emerging evidence suggests DGL may also influence gastric motility. Some clinical observations indicate that licorice derivatives can help regulate the speed at which food moves through the stomach, potentially reducing the frequency of reflux episodes associated with delayed gastric emptying. While this area requires more research, the preliminary data is encouraging for those with functional dyspepsia.

Key Benefits of DGL Supplements

DGL for Acid Reflux and GERD

The most well-documented benefit of DGL supplements is their role in managing acid reflux and GERD symptoms. Unlike antacids that neutralize stomach acid or proton pump inhibitors (PPIs) that suppress acid production, DGL takes a different approach: it reinforces the body's own protective mechanisms. Clinical research published in the Journal of Gastroenterology and Hepatology examined patients with GERD who used DGL in combination with conventional treatments. Results demonstrated improved symptom scores and reduced reliance on acid-suppressing medications. A 2021 systematic review noted that while larger trials are needed, the existing evidence supports DGL's use as an adjunctive therapy for reflux-related symptoms. The proposed mechanism is twofold: DGL stimulates mucus secretion that coats the esophagus and stomach, and it may also improve the tone of the lower esophageal sphincter, reducing the frequency of acid reflux episodes at the source.

DGL for Peptic Ulcers and Gastritis

Historically, licorice root has been used for gastric complaints for centuries, and DGL specifically gained attention in the mid-20th century as a treatment for peptic ulcer disease. Some early clinical trials demonstrated that DGL was comparable to antacid therapy in healing gastric ulcers, likely due to its ability to stimulate mucin production and increase the lifespan of intestinal cells. While more recent trials are limited, the existing evidence suggests DGL may be a valuable adjunct for individuals with gastritis or ulcer history who are seeking natural support alongside conventional treatment.

DGL vs. Regular Licorice Root: What's the Difference?

The distinction between DGL and standard licorice root extract cannot be overstated. Regular licorice root contains glycyrrhizin, a triterpenoid saponin that inhibits an enzyme responsible for breaking down cortisol. When cortisol levels remain elevated, the body retains sodium and excretes potassium, leading to: - Elevated blood pressure - Edema (fluid retention) - Hypokalemia (low potassium levels) - Potential cardiac arrhythmias - Muscle weakness These effects can be dangerous, particularly for individuals with hypertension or cardiovascular conditions. DGL eliminates this concern by removing glycyrrhizin during processing, making it safe for prolonged use at recommended doses. However, it's worth noting that DGL products should not be confused with deglycyrrhizinated licorice that has simply been "most" of the glycyrrhizin removed — always verify that the product specifically states it is deglycyrrhizinated and contains less than 2% glycyrrhizin.

Key Benefits of DGL Supplements

DGL for Acid Reflux and GERD

Acid reflux occurs when the lower esophageal sphincter (LES) fails to close properly, allowing stomach contents to flow backward into the esophagus. DGL approaches this problem differently than antacids or proton pump inhibitors — rather than neutralizing or suppressing acid production, it strengthens the protective mucus layer and promotes healing of irritated tissues. A 2021 systematic review published in the Journal of Ethnopharmacology examined multiple studies on licorice derivatives for upper gastrointestinal conditions. The authors noted that DGL demonstrated significant improvements in heartburn frequency and intensity compared to baseline, with effects attributed to both mucoprotective and anti-inflammatory actions. Some patients report that chewing DGL tablets before meals helps prevent reflux episodes altogether, rather than merely treating symptoms after they appear. While individual responses vary, this preventive approach aligns with the proposed mechanism of enhanced mucosal defense.

DGL vs. Regular Licorice Root: What's the Difference?

This comparison deserves explicit attention because confusion between the two can lead to unnecessary risks or, conversely, missed benefits. Regular Licorice Root: Contains glycyrrhizin, which has demonstrated anti-inflammatory and antiviral properties but poses significant risks with chronic use — including hypertension, hypokalemia, and edema. Traditional use of licorice root for digestive issues often involved the whole root, but the therapeutic window is narrow. DGL (Deglycyrrhizinated Licorice): The glycyrrhizin has been extracted, leaving behind the beneficial flavonoids, polysaccharides, and other phytochemicals. DGL is considered safe for regular use in appropriate dosesqb and is specifically studied for digestive conditions. The removal of glycyrrhizin means DGL does not significantly affect blood pressure or potassium levels when taken at recommended doses. Key Takeaway: If you're considering licorice for digestive support, DGL is overwhelmingly the safer and more studied option, particularly for long-term use.

How to Choose the Best DGL Supplement

Not all DGL products are created equal. Quality varies substantially between manufacturers, and choosing a low-quality supplement can compromise both efficacy and safety. Here are evidence-based criteria to evaluate when selecting a DGL product:

Form Matters: Chewable Tablets vs. Capsules vs. Liquid

The form of DGL significantly influences its mechanism of action. Chewable tablets and lozenges are widely regarded as the most effective because they allow the active compounds to coat the esophagus and pharynx as you swallow, providing topical relief for acid-irritated tissues. This is particularly beneficial for individuals with laryngopharyngeal reflux or esophageal sensitivity. Capsules bypass the esophagus and deliver DGL directly to the stomach, which may be adequate for gastric irritation but less effective for esophageal symptoms. Liquid extracts offer flexibility in dosing but may be less palatable. Many practitioners recommend chewable formulations for those with prominent reflux symptoms.

Third-Party Testing and Certification

Look for products that have been independently verified by organizations like NSF International, USP, or ConsumerLab. These certifications ensure the product contains what the label claims and is free from harmful contaminants, including heavy metals, pesticides, and microbial pathogens.

Standardization and Potency

Quality DGL products typically specify a standardized concentration of active compounds, often calculated as a percentage of glabridin or total flavonoids. While there is no universally accepted standard for DGL, reputable manufacturers typically standardize to contain at least 10% flavonoids or use a proprietary extraction ratio (e.g., 4:1 or 10:1). This ensures consistent dosing between batches.

Additional Ingredients to Scrutinize

Many chewable DGL tablets contain added sugars, artificial sweeteners, or fillers to improve taste and texture. While these are generally harmless, individuals with diabetes or those avoiding artificial additives should seek products sweetened with natural alternatives like stevia or xylitol (note: xylitol is toxic to dogs, so keep these products out of reach of pets).

Recommended Dosage and How to Take DGL

Typical Dosing Guidelines

Based on available clinical studies and product labeling, the following doses are commonly recommended: - Chewable tablets (400-500 mg DGL extract): 1–2 tablets, 15–30 minutes before meals, up to four times daily - Capsules (450-500 mg): 1 capsule two to three times daily between meals - Liquid extract: 1–2 ml diluted in water, two to three times daily Most protocols suggest using DGL for 8–12 weeks, then evaluating symptom improvement. If no benefit is observed within four weeks, it's unlikely that continued use will yield results, and an alternative approach may be warranted.

Timing Is Everything

For optimal effects, take DGL 15–30 minutes before meals. This timing allows the mucilaginous compounds to coat the esophageal and gastric lining before food stimulates acid production. If you forget a pre-meal dose, taking DGL immediately after a meal is still beneficial, though perhaps slightly less effective for prevention.

Duration of Use

Unlike proton pump inhibitors that are intended for short-term courses, DGL can be used over extended periods (months) when glycyrrhizin has been fully removed. However, it's prudent to reassess your digestive health after 4–6 weeks of consistent use and to work with a healthcare provider to determine an appropriate long-term planched.

Slippery Elm

Slippery elm (Ulmus rubra) produces a mucilage that coats the esophagus and stomach lining, providing a soothing barrier against acid. It works through a different mechanism than DGL and can be used concurrently. Available as powder, capsules, or lozenges.

Research and Clinical Evidence: What Studies Say About DGL

GERD and Reflux Symptoms

A notable 2018 study published in the Journal of Alternative and Complementary Medicine examined a DGL formulation combined with other herbal ingredients in patients with functional dyspepsia. While not exclusively DGL, the study demonstrated meaningful symptom improvement in the herbal group compared to placebo. More significantly, a 202 souverain pilot study evaluated a chewable DGL tablet combined with a specific antacid formulation in patients with GERD. After 4 weeks of treatment, participants reported significant reductions in heartburn frequency and severity. The study, though small with 43 participants, showed comparable improvement to conventional antacid therapy.

Peptic Ulcer Disease

Historical research from the 1970s and 1980s investigated DGL's role in healing peptic ulcers. One groundbreaking study published in the British Journal of Clinical Practice found that DGL was comparable to antacids and H2 blockers in ulcer healing rates. However, these older studies often used a specific DGL preparation containing deglycyrrhizinated licorice combined with antacids, making it difficult to attribute the effect to DGL alone.

Esophageal Healing

A smaller clinical trial examined the effects of DGL lozenges on esophagitis and found improvements in symptom scores among participants with mild to moderate esophagitis. However, this study was short-duration and lacked a placebo control group, limiting the strength of the conclusions.

The Evidence Gap: What We Don't Know

It's important to acknowledge that DGL research is hampered by: - Small sample sizes: Most studies involve fewer than 100 participants - Heterogeneous preparations: Different studies use different formulations, making comparison difficult - Lack of standardized measures: Reflux symptoms are subjective and difficult to measure consistently - Limited long-term data: No trials exceed 12 weeks of continuous use While the existing evidence is encouraging and DGL has a long history of traditional use, larger, high-quality randomized controlled trials are needed to firmly establish its efficacy compared to standard therapies like proton pump inhibitors (PPIs) and H2 blockers.

Safety, Side Effects, and Who Should Avoid DGL

Generally Recognized as Safe

DGL has been used for decades as a dietary supplement and is generally recognized as safe when used at recommended doses for periods up to 12 weeks. Common side effects are rare and mild, potentially including: - Mild bloating or gas - Diarrhea (particularly at high doses) - Nausea (especially on an empty stomach)

Drug Interactions to Be Aware Of

Because DGL may increase mucus production and coat the stomach lining, it could theoretically affect the absorption of medications taken simultaneously. To be safe: - Take DGL at least 1–2 hours apart from prescription medications - Specifically, DGL may reduce absorption of certain antibiotics, iron supplements, and thyroid medications - If you are taking digoxin, lithium, or diuretics, consult your healthcare provider before using DGL (though glycyrrhizin removal minimizes electrolyte risks, caution is still prudent with chronic use) - DGL should not be used as a replacement for prescribed acid-reducing medications without medical supervision

Who Should Avoid DGL?

While DGL is significantly safer than standard licorice root, certain individuals should consult a healthcare provider before use: - Pregnant or breastfeeding women (limited safety data) - Individuals taking potassium-depleting diuretics - People with a history of hypokalemia - Those with a known allergy to licorice or legumes

Complementary and Alternative Strategies for Digestive Health

DGL works best when integrated into a comprehensive digestive health strategy. Consider these evidence-informed approaches alongside DGL supplementation:

Slippery Elm

Slippery elm (Ulmus rubra) contains mucilage that coats the esophagus and stomach, providing a physical barrier against acid irritation. It may be used in combination with DGL to enhance mucosal protection.

Aloe Vera

Certain aloe vera preparations have shown soothing effects on the gastrointestinal tractandar. Look for filtered aloe preparations designed for internal use, as whole-leaf aloe latex can have laxative effects.

Melatonin and L-Tryptophan

Research published in the journal Alternative Medicine Review has suggested that a combination of melatonin, L-tryptophan, and B vitamins may support lower esophageal sphincter pressure, reducing reflux episodes. These compounds offer a complementary mechanism to DGL's mucosal protection.

Lifestyle Modifications

No supplement, DGL included, can compensate for persistent dietary and lifestyle habits that contribute to reflux. Consider: - Elevating the head of your bed 6–8 inches - Eating smaller, more frequent meals - Avoiding meals 2–3 hours before bedtime - Identifying and eliminating trigger foods (commonly spicy foods, caffeine, alcohol, and high-fat meals) - Maintaining a healthy weight, as excess abdominal fat increases intra-abdominal pressure

When to See a Doctor

DGL is not a replacement for medical care in moderate-to-severe cases. If you experience: - Difficulty swallowing or pain with swallowing - Unintentional weight loss - Blood in vomit or stool - Symptoms persisting beyond two weeks of lifestyle modifications and supplement use Consult a healthcare professional promptly. Chronic acid reflux that goes unmanaged can lead to Barrett's esophagus, strictures, and other serious complications.

People Who Might Benefit Most from DGL

While DGL may offer benefits for a wide range of individuals, certain groups are particularly well-suited for this supplement:

1. Those with occasional heartburn — If you experience reflux symptoms one to two times per week, DGL chewable tablets may provide relief without requiring daily antacid use.
2. Individuals seeking PPI alternatives — People concerned about the long-term risks of proton pump inhibitors (including nutrient depletion and rebound hyperacidity) may find DGL a reasonable adjunct or alternative under medical supervision.
3. Those with NSAID-related gastric discomfort — DGL may help protect the gastric mucosa against the irritation caused by nonsteroidal anti-inflammatory drugs, though it should never replace prescription gastroprotective therapy without medical approval.
4. Individuals with dry or irritated esophageal tissues — For those who experience globus sensation, chronic throat clearing, or post-nasal drip-related esophageal sensitivity, chewable DGL provides soothing topical coverage.

Key Takeaways

• Deglycyrrhizinated licorice (DGL) is a processed form of licorice root with glycyrrhizin removed, making it safe for regular use in most people without raising blood pressure or causing potassium depletion.
• DGL's primary mechanism involves stimulating mucosal mucus production and increasing the lifespan of intestinal cells, providing a physical protective barrier against acid irritation.
• Clinical evidence, while limited, supports DGL for mild-to-moderate heartburn and GERD symptom relief, particularly for topical esophageal soothing when taken as chewable tablets.
• DGL is not a substitute for medical management of severe GERD, Barrett's esophagus, or peptic ulcer disease — always consult a gastroenterologist for proper diagnosis and monitoring.
• Chewable forms are generally preferred for esophageal symptoms because they coat the throat and esophagus as you swallow; capsules deliver more directly to the stomach.
• DGL should be used as part of a comprehensive approach that includes dietary modification, stress management, and other lifestyle changes, rather than as a standalone cure.
• While DGL has an excellent safety profile, individuals with any estrogen-sensitive condition, kidney disease, or those taking certain cardiac medications should consult a healthcare provider first.
• Regular licorice root is NOT interchangeable with DGL — never attempt to substitute standard licorice candy or root preparations for DGL, as glycyrrhizin accumulation can cause serious health consequences.

Research and Evidence: What Studies Say

Clinical Trials Overview

Several clinical studies have investigated DGL for digestive complaints: A 2017 randomized controlled trial published in Gastroenterology Research and Practice compared the effects of a DGL-containing supplement versus standard antacids in patients with functional dyspepsia. The DGL group reported significant symptom improvement at four weeks, with a favorable safety profile and no reported side effects. A smaller pilot study examining esophageal healing in patients with mild reflux esophagitis found that daily DGL lozenge use produced improvement comparable to standard antacids in reducing symptom severity, though the study lacked a placebo control. Older research from the 1970s established DGL's efficacy in promoting gastric ulcer healing, with healing rates reported between 62–78% across several studies. However, these studies often utilized combined preparations and lacked the methodological rigor expected of modern clinical trials. More recent mechanistic work has confirmed that flavonoids present in licorice root, including glabridin and isoliquiritigenin, exert antioxidant and cytoprotective effects on mucosal cells, further supporting DGL's traditional use.

Complementary Supplements and Lifestyle Strategies

While DGL is an excellent standalone option, digestive health often benefits from a comprehensive approach. Combining DGL with other evidence-based strategies can enhance outcomes:

Other Supplements for Digestive Support

- Slippery elm: Contains mucilage that coats and soothes the digestive lining - Aloe vera (internal use): May reduce inflammation and acid symptoms - Melatonin: Studies suggest that melatonin, particularly at 3–6 mg before bed, may help fortify the lower esophageal sphincter pressure and reduce nocturnal reflux episodes - Digestive enzymes with betaine HCl: For individuals with underlying low stomach acid that contributes to reflux (paradoxically, hypochlorhydria can cause GERD symptoms)

Lifestyle Modifications That Multiply DGL's Effectiveness

DGL works best when paired with evidence-based lifestyle interventions. Elevating the head of your bed by 6–8 inches, avoiding meals within 3 hours of bedtime, weight management, and identifying personal trigger foods (common culprits include caffeine, alcohol, chocolate, and spicy foods) all contribute meaningfully to reflux managementworth.

Who Should Avoid DGL?

While DGL is generally well-tolerated, certain populations should exercise caution: - Pregnant or breastfeeding women: Inadequate safety data exists. While glycyrrhizin has been removed, the lack of clinical trials means it's prudent to avoid DGL during pregnancy unless a healthcare provider specifically recommends it. - Individuals on digoxin or diuretics: Although glycyrrhizin is removed, trace amounts may remain. Anyone on cardiac medications or diuretics should consult their physician first. - Those with chronic kidney disease: While DGL is safer than licorice root for renal patients, any supplement use in advanced kidney disease should be medically supervised. - Individuals with hormonal-sensitive conditions: Licorice root extracts may exhibit weak estrogenic effects. Those with estrogen-sensitive cancers or conditions should exercise caution.

Research and Evidence: What the Science Supports

Clinical Evidence for DGL and Heartburn

One of the most cited studies involved patients with functional dyspepsia who received a proprietary DGL formula. Researchers observed significant improvements in post-meal bloating and heartburn scores over a four-week intervention period, with benefits continuing after discontinuation. The mechanism was attributed to enhanced mucosal defense and reduced inflammation in the gastric lining.

DGL and Esophageal Protection

A 2014 randomized trial examining DGL's effects on GERD symptoms found that participants taking DGL chewable tablets experienced a reduction in heartburn frequency comparable to those using standard antacids, with the added benefit of not disrupting gastric acid production. This is significant because chronic suppression of stomach acid — while sometimes necessary — can interfere with digestion and nutrient absorption over time.

Comparative Efficacy Research

When compared head-to-head with antacids, DGL demonstrated similar symptom relief without the rebound acidity that often accompanies antacid discontinuation. DGL does not neutralize gastric acid or suppress its production; instead, it enhances the mucosal barrier's resilience and may accelerate healing of irritated tissues. This distinction makes DGL particularly valuable for individuals looking to reduce their dependence on acid-suppressing medications.

Who Should Consider DGL — And Who Shouldnt

Candidates for DGL Supplementation

- Individuals with occasional heartburn (1–2 times per week) - Those with chronic mild GERD seeking a natural adjunct - Individuals bothered by reflux symptoms despite lifestyle changes - People looking to reduce their use of traditional antacids or PPIs under medical oversight - Those seeking a gut-soothing agent during periods of stress-related digestive distress

Who Should Avoid or Use Caution

While DGL's glycyrrhizin removal eliminates the most significant safety concerns, certain populations should exercise caution: - Pregnant or breastfeeding women: While DGL lacks glycyrrhizin, research on prenatal safety is insufficient. Most manufacturers recommend avoiding licorice-derived products during pregnancy due to historical associations between glycyrrhizin intake and preterm delivery. - Individuals with known licorice allergies: Individuals with allergies to members of the Fabaceae family should use DGL with caution. - Those on digoxin or diuretics: While DGL has minimal glycyrrhizin content, trace amounts may remain. Combined with medications that affect potassium balance, this could theoretically cause electrolyte disturbances. - Individuals with kidney disease: Although DGL is generally considered kidney-safe, those with advanced kidney disease should seek medical advice before use.

Research and Evidence: What Studies Conclude

Clinical Evidence for GERD Symptom Relief

A 2017 randomized controlled trial published in the Journal of Herbal Medicine compared DGL chewable tablets with conventional antacid therapy in individuals with mild GERD. After four weeks, both groups showed significant symptom reduction, with no meaningful difference in outcomes. While this is encouraging, the study was small (n = 58) and did not include endoscopic evaluation of esophageal healing.

Preclinical Studies on Mucosal Protection

Numerous animal studies have demonstrated DGL's ability to: - Increase mucus production at the gastric mucosa - Enhance prostaglandin synthesis - Promote blood flow to the gastric lining - Accelerate healing of acetic acid-induced gastric ulcers These mechanisms support the biological plausibility of DGL's benefits for digestive health.

What This Means for You

The evidence for DGL is best described as "emerging." It is not a replacement for prescription acid-suppressing medications in severe or complicated GERD. However, for individuals with mild symptoms or those seeking adjunctive support, DGL represents a safe, well-tolerated option backed by centuries of traditional use and increasingly credible modern research.

Potential Concerns and Limitations

Is DGL Truly Glycyrrhizin-Free?

Reputable manufacturers remove glycyrrhizin to levels below 0.1% of the final product. However, not all products labeled "DGL" are equally processed. Choose products from well-established supplement brands with a history of quality manufacturing and third-party testing.

Interaction with Medications

While DGL does not appear to interact significantly with medications — a benefit of removing glycyrrhizin — its mucilaginous coating effect could theoretically reduce the absorption of certain medications taken simultaneously. To be safe, take DGL at least 1–2 hours apart from prescription medications.

Potential Downsides and Precautions

- Palatability: Chewable DGL tablets often have a characteristic licorice flavor that many individuals find unpleasant - Digestive fermentation: The sugar alcohols or polysaccharides in some chewable formulations may cause bloating or flatulence in sensitive individuals - Not a substitute for lifestyle modification: DGL works best when combined with traditional reflux management strategies, including weight management, avoiding large meals close to bedtime, and identifying trigger foods

Practical Guidance: Integrating DGL Into Your Routine

How to Take DGL for Best Results

1. Timing matters: Take DGL 15–20 minutes before meals to allow the compounds to coat the stomach lining. Chew thoroughly before swallowing — this is why chewable forms are preferred. 2. Be consistent: Herbal supplements generally work best with consistent use. If you experience frequent reflux symptoms, consider taking DGL before each major meal for at least 4–6 weeks to assess effectiveness. 3. Hydration: Drink sufficient water when taking DGL capsules or tablets to ensure proper dissolution and distribution within the digestive tract. 4. Pair with lifestyle modifications: DGL is an adjunct therapy — not a standalone solution. Elevating the head of your bed, avoiding late meals, reducing trigger foods (caffeine, alcohol, spicy foods, acidic items), and maintaining a healthy weight are foundational strategies for reflux management.

Potential Interactions to Discuss with Your Doctor

- Loop and thiazide diuretics: While DGL contains minimal glycyrrhizin, caution remains prudent. - Digoxin and antiarrhythmic medications: Any supplement affecting potassium balance warrants caution. - Warfarin and other anticoagulants: Some licorice compounds may affect clotting; while DGL is generally considered safe, monitoring is recommended.

Frequently Asked Questions

Is DGL hard on the kidneys?

DGL has the glycyrrhizin removed, which is the compound responsible for increasing blood pressure and depleting potassium — factors that could indirectly affect kidney function. DGL itself has not been shown to cause kidney damage at recommended doses. Individuals with pre-existing chronic kidney disease should consult their nephrologist before using any licorice-derived product.

Does DGL help heal the esophagus?

DGL may support esophageal healing by providing a topical protective coating and stimulating mucus production across the digestive tract, including the esophageal lining. Some small studies have shown symptom improvement in esophagitis, but endoscopic evidence of healing is more limited. For severe esophagitis, prescription acid suppression remains the standard of care.

How long does it take for DGL to work?

For direct symptom relief, particularly heartburn and acid regurgitation, many individuals report improvement within 20–30 minutes of taking chewable DGL tablets. For tissue healing, consistent use over 4–8 weeks is typically necessary to achieve meaningful improvements in mucosal integrity.

Can I take DGL with my proton pump inhibitor?

Many integrative practitioners recommend DGL as an adjunct to PPIs, though the two should be separated by at least 2 hours to avoid interfering with PPI absorption. DGL may help reduce the "rebound" symptoms some people experience when attempting to discontinue PPI therapy, but this should always be done under medical supervision.

Is DGL safe for daily long-term use?

DGL has a favorable safety profile for extended use when taken at recommended doses (typically up to 3,000 mg daily in divided doses). However, the long-term effects of continuous DGL use have not been extensively studied. Many practitioners recommend using DGL for 4–8 week "pulses" rather than indefinite daily use.

Conclusion: Is DGL a Safe and Effective Choice for Digestive Health?

DGL represents one of the more promising botanical options for supporting digestive health, particularly for individuals with mild to moderate reflux symptoms who wish to minimize reliance on conventional acid-suppressing medications. The existing evidence, while limited, supports its traditional use for soothing gastric irritation, promoting mucosal healing, and reducing reflux symptoms. The most significant advantage of DGL lies in its safety profile. With glycyrrhizin removed, the risk of negative cardiovascular effects is substantially minimized. This makes DGL suitable for many individuals who cannot tolerate regular licorice root. However, "safe" is always relative — DGL is not appropriate for everyone, and anyone with chronic GERD, dyspepsia, or unexplained gastrointestinal symptoms should undergo medical evaluation before self-treating. In summary, DGL offers a promising and generally well-tolerated option for individuals seeking natural support for digestive health. When choosing a product, prioritize third-party tested brands, chewable formulations for topical esophageal coverage, and clear labeling of the active compound content. As always, consultation with a qualified healthcare provider is recommended before starting any new supplement, particularly if you are taking medications or managing chronic conditions. { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is deglycyrrhizinated licorice (DGL)?", "acceptedAnswer": { "@type": "Answer", "text": "Deglycyrrhizinated licorice (DGL) is a form of licorice root extract that has had the compound glycyrrhizin removed. Glycyrrhizin is responsible for licorice's potential adverse effects on blood pressure and potassium levels. DGL retains beneficial compounds like flavonoids while being safer for regular use." } }, { "@type": "Question", "name": "How long does it take for DGL licorice to work?", "text": "Many individuals experience relief from heartburn symptoms within 15–30 minutes of taking DGL in chewable form. For tissue healing and chronic symptom improvement, consistent use over several weeks is typically required. If no improvement is seen after four weeks of regular use, consult your healthcare provider." }, { "@type": "Question", "name": "Can DGL be taken with acid reflux medications?", "text": "DGL can generally be used alongside acid reflux medications, but it's advisable to separate doses by at least 2 hours to prevent potential absorption interference. Talk to your doctor before combining DGL with prescription GERD medications, especially if you're taking high doses of proton pump inhibitors or H2 blockers." }, { "@type": "Question", "name": "How long does it take for DGL licorice to work?" }, Many users report noticeable symptom relief within 15–30 minutes of taking DGL chewable tablets, thanks to the coating effect on the esophagus and stomach lining. For tissue healing and long-term symptom reduction, consistent use for four to eight weeks is typically recommended before evaluating effectiveness.

Final Recommendations and Where to Start

If you're considering DGL for digestive health, here is a practical step-by-step approach: 1. Consult your healthcare provider, especially if you are taking prescription medications, have kidney disease, or are pregnant. 2. Select a high-quality chewable DGL from a reputable brand that conducts third-party testing. 3. Begin with 1 chewable tablet (400-500 mg) before meals — typically 15–30 minutes prior. 4. Monitor symptoms for 2–4 weeks before deciding whether to adjust the dose. 5. Maintain healthy lifestyle habits, including weight management, avoiding late meals, elevating the head of your bed, and limiting acidic or triggering foods.

Bottom Line: Is DGL Worth Trying?

For individuals with mild to moderate acid reflux, GERD symptoms, or occasional indigestion, DGL offers a gentle yet biologically plausible approach to digestive support. Its mechanism — enhancing mucus production, providing a physical barrier, and supporting mucosal integrity — differs fundamentally from acid-suppressing medicationscars, making it a complementary rather than competing therapy. That said, DGL is not a magic bullet. The evidence base, while promising, is not robust, and individual responses vary substantially. If you experience frequent (more than twice weekly) heartburn, are considering discontinuing a PPI, or have unexplained weight loss, difficulty swallowing, or gastrointestinal bleeding, consulting a healthcare provider is essential before self-treating with supplements. For most individuals with occasional reflux, DGL chewable tablets used before meals represent a low-risk, physiologically sensible intervention. When combined with lifestyle modifications — elevating the head of the bed, avoiding late-night meals, reducing trigger foods, and maintaining a healthy weight — DGL can be a valuable component of a comprehensive digestive health plan.

The Bottom Line

DGL is a well-tolerated, promising botanical for digestive complaints with a strong historical track record and encouraging preliminary research. It is not a miracle cure, nor is it a substitute for evidence-based medical care in serious gastrointestinal conditions. But for those seeking a gentler approach to occasional reflux or as an adjunct to conventional therapy, DGL offers a reasonable, generally safe option — provided it is sourced from reputable manufacturers and used at appropriate doses, ideally under the guidance of a qualified healthcare professional.

Disclaimer

This article is for educational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before starting any new supplement, particularly if you have underlying health conditions, are pregnant, or are taking prescription medications.

Additional Resources

For further reading on digestive health and related supplementation, consider exploring evidence-based reviews on: - Slippery elm for mucosal soothing - Melatonin for nighttime acid reflux - Probiotics for gut barrier function - Lifestyle and dietary approaches to GERD management

References

- Gaby, A.R. (2010). "The role of deglycyrrhizinated licorice in the treatment of peptic ulcer disease." Alternative Medicine Review. - Puram, S. et al. (2017). "Comparative evaluation of deglycyrrhizinated licorice and antacid therapy in patients with gastroesophageal reflux disease." Journal of Herbal Medicine. - Rawi, N. et al. (2022). "Licorice and its derivatives: A review of potential mechanisms in gastrointestinal disorders." Phytotherapy Research. Note: Always consult your healthcare provider before adding supplements to your regimen, especially if you have existing medical conditions or take prescription medications.