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L-glutamine

Also called: Glutamine

An amino acid that fuels the cells lining your gut. It's often used to support the gut lining and recovery.

Supplements can interact with medications and aren't right for everyone, especially during pregnancy or breastfeeding, or with a chronic condition. Ask your provider before you start.

Studied for

  • Gut lining support
  • Digestive symptoms and IBS (some studies)
  • Recovery from illness or intense exercise
  • Sugar cravings (limited evidence)

Found naturally in

  • Your body makes most of what it needs
  • Beef, chicken, and fish
  • Eggs and dairy
  • Tofu
  • Cabbage
What variations of L-glutamine exist?Our top pick, what to skip, and how to read the label

Label red flags

  • Gut blends with many ingredients and no amounts listed
  • Gut blends that include licorice root that isn't labeled DGL

Check with a provider

  • Liver disease, especially cirrhosis
  • Kidney disease
  • Seizure disorder or taking seizure medicines
  • Cancer or in cancer treatment. Ask your oncology team first.
  • Pregnancy or breastfeeding

Related conditions

Crohn's disease & ulcerative colitisCeliac disease

Supplements that contain it

3 products in Dr. Lesher's dispensary list l-glutamine on the label.

Check with your provider before taking any of these, especially if you're pregnant or take medications.

Parts of the body it affects

Explore what each area does and the conditions that can affect it.

Illustration of the large intestine (colon)

Digestive tract

Your stomach and intestines absorb nutrients and hold most of your body's immune tissue, which makes the gut a common target in autoimmune disease.

Illustrations: Servier Medical Art, CC BY 4.0

Dr. Lesher, ND

Ready to find the root cause?

Dr. Lesher is a Naturopathic Doctor who focuses on autoimmune and chronic conditions in women. Since 2020, she's helped hundreds of patients stop managing symptoms and start healing.

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