Best L-Glutamine Supplements of 2025

"After a long struggle with my reflux, I was amazed at how this supplement, along with okra pepsin, helped me. I no longer need my prescription or OTC meds and can drink regular coffee without issues. Though I wish I could say I lost weight, I'm still at the same level, but I've significantly cut back on sodas and fried foods. This combo has reduced my medication intake and saved me money!"

"I started taking this supplement for weight loss before bed. Although I haven't seen much change yet, I'm sticking with it. I’m nearing the end of my first bottle and will provide updates after the second. I do believe NOW brand offers solid vitamins!"

"I tried this supplement after seeing positive reviews, and I agree that it works as an appetite suppressant. At my age, maintaining a good metabolism is crucial, especially since I've had borderline health issues. This supplement really helps keep my cravings at bay, and I've managed to lose about 5 pounds recently. It's a relief to find something that revs up my metabolism!"

"After years of using stimulant laxatives, I wish I had chosen Metamucil instead. Now, I rely on Pure Encapsulations l-glutamine for better digestive motility. It has a calming effect, especially when my ileum is acting up. After taking this, I feel a sense of calm as my digestive issues ease."

"I've learned that l-glutamine can help with digestion, not just muscle recovery. Since I started strength training again, it has significantly reduced my muscle soreness and even helped with gas issues. It's now a staple in my routine."

"While the supplement seems beneficial, I had to give it three stars due to its corn content, which isn't listed on the label. As someone allergic to corn, I was disappointed and left with a product I can't use."

"I’ve struggled with supplements before, but this one is great! No graininess or bad taste, and it offers fantastic value per scoop. I haven’t seen weight changes yet, but I’m optimistic!"

"After dealing with bloating and stomach pain, I tried this product for gut healing. The results have been amazing! I noticed a difference right away when I stopped taking it, but it works quickly once I resume."

"I was advised to take this for leaky gut. It arrived on time, and I'm hopeful it will do the trick!"

"I don't know all the reasons why people use this supplement, but for me, the greatest benefit has been for my hair loss. After just 5 days of use, I noticed less than 30 hairs lost per day, compared to 60-70 previously. My hair feels fuller and I’m amazed at the results. I’ll keep you updated in 6 months!"

"I find that glutamine is absolutely amazing for gut health. I love this brand because of the quality, price, and quantity of their supplements. They always deliver."

"Since I started taking 3 pills a day, I’ve noticed an improvement in my between-meal hunger and the foggy feeling I had after turning 60. I believe the effects are cumulative and it truly balances my mood while reducing my need to snack."

"Discovering this gut-healing vitamin has been transformative for my overall well-being! I’ve experienced improved digestion and enhanced energy levels. This vitamin is easy to incorporate into my daily routine, and I can't recommend it enough for anyone looking to prioritize their gut health. Cheers to feeling revitalized from the inside out!"

"I had numerous illnesses due to toxic mold exposure and my gut health suffered greatly. After trying many remedies, I decided to give this product a shot. I took it on an empty stomach, and I felt immediate relief from bloating. My bowel movements became normal, and my energy levels improved significantly. I’m incredibly grateful for this supplement!"

"My 13-year-old daughter had severe belly issues, leading to daily vomiting. After trying various medications and natural remedies, we finally found this product. It has given her life back! She noticed a positive change right away, and now she no longer faces debilitating stomach problems. If you’re struggling with unusual stomach issues, I urge you to try this supplement!"

"I love this product because it helps me control my sugar cravings and it's very inexpensive. After just two days, I noticed a significant drop in my cravings. I take one capsule in the morning and one in the afternoon, and I've even started losing weight—around 2 pounds per week. This has been a great start for me."

"Double Wood makes quality supplements. While it's hard for me to assess the specific effects of this L-glutamine, I trust their products. It's an important amino acid and the lack of aftertaste makes it easy to take."

"I've had some issues with Amazon reviews, but this particular brand of L-glutamine is excellent. It's very affordable and has minimal fillers. Despite my problems with Amazon's review policies, I find this product to be very effective for my digestive issues."

"My husband swears by this product. It helps with muscle recovery, strength, and stamina. At 58 years old, he’s a competitive powerlifter in great health, and this supplement is making a difference!"

"I’m really impressed with Optimum Nutrition's L-Glutamine Muscle Recovery Capsules. Each capsule packs 1000mg of L-Glutamine, which has significantly reduced my muscle soreness and fatigue. This has allowed me to push harder at the gym and see better results."

"I just started taking this supplement and it seems to be great for my recovery, especially after heavy lifting days. It's really decreased muscle soreness the next day! I should have started using it much sooner!"

"I use this daily because I exercise a lot and stay active in the community. While I'm not sure if I'm feeling any different, I’ll keep taking it based on my fitness assessment's advice."

"I've been using this brand of glutamine for several months now, and it has become a staple in my dietary supplement routine. The presentation and quality of the product are great. My last purchase was for three bottles!"

"I have digestion issues, and my doctor recommended this product as an alternative to steroidal medication. It works well for me."

"I've struggled with IBS-D for years, but after a significant episode, I decided to take L-Glutamine seriously. It's been a week, and my symptoms are improving significantly: less frequency, better form, and reduced cramping. I recommend dissolving it in room temperature water for best results."

"This powder is so great in my morning tea; I can't even taste it! I've noticed that when I skip it, I feel a difference because it really works for me."

"Since starting this product, I've felt much better. I've also added magnesium to my diet, and I heard L-Glutamine is effective for cravings, so when I feel a urge, I take some. It seems to work really well for that too!"

"I've recently added L-Glutamine to my workout supplements. I started with the capsules but decided to also get the powder, which I find incredibly easy to incorporate into my protein shakes. It's ultra fine, fully dissolves, and adds no taste. I mix it with my protein nut milk and Creatine. While it's hard to quantify results, I feel like my workouts have improved since I started using it. I'm leaning toward the powder over capsules for this product. For BCAA, I opted for empty capsules because the powder tastes bad."

"I've been using this product for about two weeks after my workouts, and I can really feel the difference. It helps me recover better and allows me to lift harder the next day. I take it right after my workouts with protein, and I notice I'm less sore after intense sessions. I typically work out for two hours a day, and after about a week of taking this supplement, I started to see a noticeable reduction in muscle soreness."

"I have serious digestive issues, and this is the first product that has kept my system running smoothly. I take two capsules daily, one in the morning and one at night, and it's been a game changer for me."