Gluten free
Dairy free
Non-GMO
Milk free
Vegetarian

††USA Functional Medicine MDs, DOs, NDs, DCs and Nutrition Professionals surveyed in 2025 for Designs for Health.

L-Glutamine is an amino acid, which is essential for the health of the immune system and the digestive tract. In the gut it promotes the health and function of the mucosal cells for normal healing and repair. L-Glutamine also supports optimal muscle growth and strength and has been shown to be particularly useful in helping to maintain muscle tissue, as it can be used as a substrate for protein synthesis and as an anabolic precursor for muscle growth.

Made with non-GMO ingredients.

Suggested Use / Directions:
As a dietary supplement, take 3 grams (approx. 3/4 teaspoon) per day, or as directed by your health care practitioner.

Serving Size:
3 grams (approx. ¾ teaspoon)

Amount Per Serving:

L-Glutamine ... 3 g

Other Ingredients:
None

This product does not contain gluten.

This is a natural product that may exhibit color, taste and density variations from lot to lot.

Store at room temperature. Keep out of reach of children.

Why is this a top pick for L-glutamine?

This product has been chosen as a Top Pick by Fullscript based on factors like quality, ingredients, value, and availability. Your provider’s recommendation always comes first.

This product was selected based on the factors below: A free-form L-glutamine formula in powdered form to support gut mucosal barriers, and immune health. Non-GMO, gluten-free, dairy-free, soy-free powder manufactured under cGMP with rigorous raw material selection and contaminant testing.*

Learn more about our process

About enhanced testing

Every product on Fullscript meets our high quality standards – but we don’t stop there. Enhanced Testing means select products are pulled directly from Fullscript’s shelves and tested by independent labs, so what’s on the label matches what’s in the product.

Learn more about the testing methods

Top pick

Enhanced testing

L-Glutamine Powder

Designs for Health

$53.99