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#20 in Amino Acids Third-Party Tested

NOW Foods L-Glutamine 1000mg

by NOW Foods

"The gut and immune amino acid — 1000mg L-glutamine for intestinal barrier integrity and immune cell fuel"

Amazon Rating
4.6/5
Reviews
10,000+
Price Range
$14-18
Servings
120 capsules
GMP CertifiedNPA A-Rated
Our Editorial Rating
7.8
Good
FormCapsule
CategoryAmino Acids
SubcategoryL-Glutamine
View on Amazon

Overview

NOW Foods L-Glutamine provides 1000mg of L-glutamine per capsule — the most abundant amino acid in the body and the primary fuel source for intestinal epithelial cells and immune cells. Glutamine is 'conditionally essential' — during stress, illness, intense exercise, or gut inflammation, the body's demand exceeds its production capacity. Glutamine supplementation supports intestinal barrier integrity (preventing 'leaky gut'), immune function, and muscle recovery. It's one of the most widely used supplements in clinical nutrition for gut health.

Key Ingredients

IngredientAmount
L-Glutamine1000 mg

Pros & Cons

What We Like

  • Primary fuel for gut cells
  • 120 capsules (4-month supply at 1/day)
  • Supports intestinal barrier integrity
  • Immune cell fuel
  • 10,000+ Amazon reviews

What Could Be Better

  • 1000mg per capsule (clinical doses are 5-20g)
  • Need 5-20 capsules for clinical dosing
  • Powder form more practical for high doses
  • Effects are subtle at 1000mg

Who Is This For?

Best For

  • Gut health and leaky gut support
  • Immune support during illness/stress
  • Post-exercise recovery
  • Those wanting capsule convenience

Not Ideal For

  • Those needing clinical doses (use powder)
  • Those with liver disease
  • Budget-conscious (powder is cheaper per gram)

Our Verdict

7.8/10 — Good

NOW L-Glutamine capsules provide convenient gut and immune support at 1000mg per capsule. For clinical gut healing protocols (5-20g/day), the powder form is more practical. For daily maintenance, 1-2 capsules is a reasonable approach.

Alternatives to Consider

No direct alternatives listed for this product yet.