If you have ever dealt with persistent bloating, food sensitivities, or unexplained fatigue after meals, you might be facing a condition often called “leaky gut.” This occurs when the intestinal barrier becomes compromised, allowing undigested particles to pass into the bloodstream. The result can be systemic inflammation, immune reactions, and a host of digestive complaints. Fortunately, targeted supplementation can help repair the gut lining and restore balance. Thorne, a brand trusted by over 100 professional sports teams and the #1 most recommended clinical brand by consumers and healthcare practitioners, has reformulated its popular EnteroMend as THORNE – Leaky Gut Support (Formerly EnteroMend). This comprehensive powder combines L-glutamine with soothing botanicals like aloe, curcumin, and boswellia to calm irritation and support a healthy gut barrier. In this review, we evaluate its ingredients, certifications, and overall value for anyone seeking digestive relief. If you are also exploring standalone L-glutamine options, check out our thorne L-Glutamine review for a comparison.
Pros
- Clinically studied ingredients like L-glutamine, curcumin, and boswellia target leaky gut at multiple levels
- NSF Certified for Sport provides peace of mind for athletes and health-conscious users
- High customer rating reflects consistent quality and effectiveness
- Pleasant orange vanilla flavor improves compliance over unflavored powders
- Trusted by top sports organizations and healthcare practitioners
Cons
- Higher price point compared to basic L-glutamine supplements
- Flavor (orange vanilla) may not suit everyone's taste preference
- Only 30 servings per container, requiring frequent repurchase for daily use
THORNE Leaky Gut Support, formerly known as EnteroMend, is a scientifically formulated gut health supplement designed for individuals seeking to maintain a healthy intestinal barrier. It is particularly beneficial for athletes and active individuals who experience GI discomfort during training, as well as anyone dealing with symptoms of 'leaky gut' syndrome.
The standout feature of this product is its unique combination of L-glutamine, a key amino acid for gut lining repair, with well-studied botanicals like aloe vera, curcumin, and boswellia. Together, these ingredients help soothe irritated mucous membranes, reduce inflammation, and support overall digestive function, making it a comprehensive solution rather than a single-ingredient approach.
THORNE has built a solid reputation as the #1 most recommended clinical brand by healthcare practitioners, and Leaky Gut Support lives up to that standard. The powder mixes easily in water, has a pleasant orange vanilla flavor, and is NSF Certified for Sport, meaning it is free from nearly 300 banned substances and meets rigorous label accuracy standards.
One potential drawback is the price, which is higher than basic L-glutamine powders. Additionally, the orange vanilla flavor, while nice, may not be for everyone, and the 30-serving container means you will need to repurchase monthly if using daily. However, for those serious about their gut health and willing to invest, these are minor trade-offs.
Overall, THORNE Leaky Gut Support is an excellent choice for athletes, fitness enthusiasts, and anyone with digestive sensitivity. Its evidence-based formula, third-party certification, and trusted brand reputation make it a standout product in the gut health category, despite its higher cost.
Buying Guide: What to Look for in a Leaky Gut Supplement
1. Clinically Researched Ingredients
The best leaky gut supplements rely on ingredients with scientific backing. Thorne EnteroMend combines L-glutamine, an amino acid that fuels intestinal cell repair, with aloe vera, curcumin from turmeric, and boswellia extract. These botanicals are known to calm inflammation in the gut and support mucosal integrity. Look for products that disclose exact amounts and use standardized extracts. For a deeper dive into L-glutamine alone, see our jarrow formulas L glutamine review.
2. Third-Party Certification
Because the supplement industry is not tightly regulated, choosing a product that has been independently verified adds peace of mind. Thorne’s Leaky Gut Support is NSF Certified for Sport, meaning it has been confirmed to contain exactly what the label says and is free of over 290 banned substances. This is especially important for athletes who undergo regular drug screening. If you value rigorous quality checks, also read our designs for health GI revive powder review for another certified option.
3. Flavor and Mixability
Gut health supplements often come in powder form, and taste can make or break your daily routine. Thorne offers an orange vanilla flavor that mixes easily with water. Many users find it pleasant, which helps with compliance. If you dislike strong herbal tastes, this is a plus. For those who prefer capsules, consider standalone L-glutamine products reviewed in our NOW L glutamine capsules review.
4. Suitability for Active Lifestyles
Exercise can increase intestinal permeability, making athletes particularly prone to digestive issues. Thorne’s formula is designed to support bowel regularity and a balanced inflammatory response during training. It is the only leaky gut supplement we have seen that carries the NSF Certified for Sport seal, making it a top choice for gym-goers and professional athletes alike. For more on timing, check out our guide on when to take digestive enzymes for optimal gut health.
Final Thoughts
After thoroughly evaluating the formula, certifications, and user satisfaction, we confidently recommend THORNE – Leaky Gut Support (Formerly EnteroMend) for anyone seeking to strengthen their gut barrier and alleviate digestive discomfort. Its combination of L-glutamine with soothing botanicals like aloe and curcumin, backed by NSF Certified for Sport verification, makes it a standout choice for both everyday wellness and athletic performance. If you are looking for a reliable, research-backed gut health supplement, this is one of the top options available in 2026.
Frequently Asked Questions
What is Thorne EnteroMend used for?
Thorne EnteroMend, now called Leaky Gut Support, is designed to support a healthy intestinal barrier and soothe irritated mucous membranes in the GI tract. It is commonly used by individuals with symptoms of leaky gut, such as bloating, food sensitivities, and irregular bowel movements.
Is Thorne EnteroMend safe for athletes?
Yes, this supplement is NSF Certified for Sport, which means it has been verified to be free of over 290 substances banned by major athletic organizations. Many professional athletes trust Thorne for this reason. For more on gut health during training, see our article on When to Take Digestive Enzymes.
How does Thorne EnteroMend compare to L-glutamine supplements?
While standalone L-glutamine supplements focus solely on that amino acid, Thorne EnteroMend combines L-glutamine with aloe, curcumin, and boswellia for a broader approach. This makes it more suitable for those with active inflammation or multiple gut issues. If you prefer a simpler option, our thorne L-Glutamine review covers a single-ingredient alternative.
How long does it take to see results with Thorne EnteroMend?
Individual results vary, but many users report noticeable improvements in digestion and comfort within a few weeks of consistent use. For best outcomes, combine the supplement with a gut-friendly diet and manage stress levels. As with any supplement, give it at least 30 days to evaluate its effects.
