Klean Athlete Glutamine

Theres a pattern in endurance sport many athletes know: when you ramp up training volume too much too fast, you get sick and run down more often. Glutamine is one of the amino acids behind that pattern, and it's often the first one your body comes up short on during a heavy training block.

Klean Glutamine delivers 5,000 milligrams of free-form L-glutamine per scoop in a single-ingredient powder, formulated to a standard competitive athletes can rely on.

Restores What Training Burns – Long or repeated sessions draw down your body's glutamine faster than it can replace it, and this delivers a full 5,000 milligram dose to help close that gap.

Supports Gut and Immune Recovery – Glutamine fuels the gut lining and immune cells that take the hardest hit during heavy training blocks, helping both systems recover alongside your muscles.

Replenishing = Recovery  – Long training days pull heavily on the body's glutamine supply. Replenishing it is aimed at supporting that side of recovery, not just muscle repair.

Glutamine is the most abundant amino acid in the body, and it does double duty as fuel for muscle tissue, gut lining cells, and immune cells rather than sitting around as a building block alone. During long or repeated training sessions, the body's demand for glutamine can outpace what it produces on its own, and gut and immune tissue are often first to draw on that available supply. Supplementing with free-form glutamine gives the body a ready source to pull from when training volume climbs, which is the basis for its long use in sports nutrition for supporting gut integrity and immune resilience during hard blocks.

How to Use Klean Glutamine

Dose: Mix one scoop into 8 to 10 ounces of water or your recovery shake.

Timing: Many athletes take it right after a long or hard session, when the body's glutamine demand is highest, though it can be used any time of day. Consistency across a training block matters more than any single dose.

Athletes managing heavy training volume and tested athletes who need every ingredient verified reach for Klean Glutamine because it's both single-ingredient and NSF Certified for Sport.

One scoop, one ingredient, one less variable during your hardest training weeks.