L-Glutamine Powder
The amino acid your intestinal lining burns as its primary fuel, and the one hard training drains first.*
The gut's favourite fuel
Glutamine is the most abundant amino acid in your blood, and the cells lining your intestine use it as their main energy source, more than glucose. Those cells turn over every few days and hold the gut barrier together; when glutamine runs short, under heavy training, illness or stress, the barrier loosens. Athletes know the other half of the story: glutamine is drawn down by hard sessions, and supplementing has been shown to ease soreness and speed strength recovery. One scoop a day restores what both the gut and the gym consume.*
Recover between sessions, not around them
Hard training draws down your glutamine stores and opens a short window where the gut lining and the immune system are both under strain. That is the window where a cold shows up or the next session feels flat. In a double-blind trial, adults who took L-glutamine after heavy eccentric exercise got their strength back faster and felt less sore over the following three days. In a classic study of endurance athletes, those given glutamine after a marathon reported fewer infections in the week that followed. It will not add weight to the bar for you, and we will not pretend it does. It feeds the tissues that decide how well you back up.*
Studied, not just marketed
Strong on the gut barrier, decent on recovery and immunity, weak on raw performance. We would rather tell you which is which.
Summaries describe published research on the ingredient, not on this specific product. Individual results vary. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
You cannot out-perform a body that keeps breaking down
The people who do the most are usually the ones who can least afford a bad week: the founder mid-raise, the operator living out of a carry-on, the manager whose calendar starts at seven. Stress, short sleep, travel and back-to-back weeks all pull at the same two systems, the gut lining and the immune cells, and both run largely on glutamine. When those stores run low the barrier loosens and you catch whatever is going around. A scoop stirred into water is not a productivity hack, it is basic maintenance for the parts of you that keep you in the game. In a controlled trial, patients with post-infectious irritable bowel and a leaky intestinal barrier who took glutamine for eight weeks saw their symptoms and gut permeability improve markedly.*
Why Dr. Elizabeth stocks this
"I use glutamine for two kinds of patients: people whose digestion has gone sensitive after stress, antibiotics or travel, and athletes who are not recovering between sessions. The research on the gut barrier is solid, the research on soreness is decent, and the research on performance itself is honestly weak, so I don't promise you'll lift more. I promise it feeds your gut lining and helps you recover. One scoop, any drink, every day."
What to expect
One scoop (3.15 g) in water, juice or a shake, any time of day. Glutamine is tasteless and dissolves cleanly.
Most people notice calmer digestion and easier recovery between training sessions in this window.*
Keep going through heavy training blocks, travel or stressful stretches, that is when demand is highest.*
The details
Ingredients, suggested use & label facts
L-Glutamine Powder delivers 3.15 g of pure L-glutamine per scoop — the amino acid the cells lining your gut burn as their primary fuel, and the one hard training draws down first. Research shows glutamine supports the tight junctions that hold the intestinal barrier together, and helps strength recover faster with less soreness after demanding sessions.* Immune cells rely on it too.*
Selected by Dr. Elizabeth Isalguez, MD, for patients whose digestion has turned sensitive and for athletes who are not recovering between sessions. Unflavored, vegan, single ingredient.
- Supports a healthy intestinal barrier and comfortable digestion*
- Supports muscle recovery and less post-exercise soreness*
- Supports immune function*
- Vegan, non-GMO, gluten-free, no fillers
Non-GMO · Gluten-free · Vegan-friendly · Lactose-free · Corn-free · Allergen-free · Hormone-free
Ingredients: L-Glutamine (3.15 g), Silicon Dioxide.
Amount: 3.5 oz / 98 g (≈30 servings)
Suggested use: As a dietary supplement, adults mix one (1) scoop with 6–8 oz (177–237 ml) of water or favorite beverage daily.
Caution: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any dietary supplement.
Warning: Keep out of reach of children. Do not use if safety seal is damaged or missing. Store in a cool, dry place.
Made in: USA
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Quality & testing
Made in the USA in a GMP-compliant, FDA-registered facility. A Certificate of Analysis is available for every product on request, email us and we will send it. Nothing on this shelf is stocked until Dr. Elizabeth has reviewed the formula and its label.
Shipping & returns
Orders ship from the USA within 1-3 business days. Free shipping on orders over $100. If a formula is not working for you, email us within 30 days of delivery for a refund, see our refund policy for details.
Good questions
Is 3.15 g enough?
For daily gut and recovery support, yes, that is within the range used in the barrier study. Athletes in heavy training sometimes take two scoops; ask your physician before exceeding the label.
When should I take it?
Any time. Post-workout is popular for recovery; with breakfast is easiest for gut support. Consistency beats timing.
Will it help me build muscle?
Be realistic: the research on glutamine for strength or muscle gain is weak. Its value is recovery and the gut lining, not hypertrophy. For performance, creatine has far stronger evidence.
Can I take it with creatine or collagen?
Yes, all three mix into the same shake with no interaction.
Who should not take it?
People with kidney or liver disease, anyone pregnant or nursing, and anyone under 18 should consult a physician first.
Pairs well with
