Clinical research on **L-Glutamine** for gut health and immune support uses 5–15g per day — and getting there with this product takes real commitment. Each serving is three capsules delivering 1,500mg, with a suggested use of up to three servings daily. At maximum intake (nine capsules), you're at 4,500mg, which still falls just short of the 5,000mg clinical minimum.

The free-form L-Glutamine used here is the standard supplemental form with good absorption. No fillers or extras — just the amino acid in vegetable capsules, which keeps it straightforward if you're adding it to your daily routine.

The real tradeoff is pill burden versus dose. Nine capsules a day to approach a clinical dose is a lot to keep up with. If gut support or recovery is your goal, a powder format would let you hit effective doses far more practically.

BioStacks
Solgar

L-Glutamine 500 mg

Capsule · 33 servings · $0.41/serving

7 / 100Very Poor

Supports

Score Breakdown

Formulation
7
Safety
100
Final score
7/100

Ingredients (1)

L-Glutamine1500 mg

30% of effective dose

Label Nutrition Facts

Other Ingredients

Fillers, coatings, and additives

4Safe

Magnesium StearateLubricant

Safe

Microcrystalline CelluloseBinder

Safe

Stearic AcidLubricant

Safe

Microcrystalline CelluloseBinder

Safe

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.