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L-Glutamine

Recovery/Sleep · Evidence: Limited · Importance: Optional

The most abundant amino acid in the body; a fuel source for gut and immune cells. Marketed for recovery, gut health, and immunity.

Educational only — not medical advice. BodEvo summarizes research cautiously and labels estimates as estimates. Talk to a physician or registered dietitian before starting any supplement, diet, or training program.

What the evidence says

Strongest rationale is in clinical catabolic states (critical illness, gut injury). For healthy resistance-trained athletes eating sufficient protein, performance/hypertrophy benefits are limited.

Typical dose & timing

Dose: Commonly 5 g/day in supplements; clinical gut protocols differ and should involve a clinician.

Timing: Any time; consistency over timing.

Role in a stack

Optional recovery/gut add-on. For most lifters eating enough total protein, added glutamine is redundant.

Redundancy check: Whole-protein sources (whey, food) already supply glutamine. Extra glutamine is often unnecessary if protein intake is adequate.

Cautions & safety

Generally well tolerated. Benefits for muscle growth or performance in healthy, well-fed lifters are not well supported.

Considered safe for healthy adults at typical doses. Educational only — talk to a clinician for clinical gut conditions.

Best for

gut-health interest · very high training/illness stress (context-dependent)

Source-verified products

Real products in this category, ordered by review count. Each price and rating comes from the product's own page, recorded 2026-07-29 — follow the link for current values. Links go to the product's source page and never affect this ranking.

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