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Natural Factors
Micronized L-Glutamine Powder, 8 oz (226 g)
Powder · 5 g (1 scoop or 1 heaping teaspoon)
What it does
Glutamine
Form not confirmedGrade —
Supports normal nitrogen metabolism; extra glutamine has not consistently improved exercise performance or muscle growth.
Ingredients (1)
Other ingredients
No other ingredients listed
Lab testing
How to take it
On an empty stomach
On the label
1 scoop (5 g) or 1 heaping teaspoon per day or as directed by a health professional. L-Glutamine has no taste and mixes easily in water or your favorite beverage.
Price check
$17.47
Near the median of 74 glutamine supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.
Not medical advice. Consult your healthcare professional.