Sports nutrition · MET-Rx

L-Glutamine Unflavored

Why MET-Rx l-glutamine?

  • 6000 mg l-glutamine per serving
  • No Artificial Sweeteners, Flavors or Colors

From the label’s panel and printed marks — not its marketing.

Supplement Facts

Serving size 1 scoop (6 g)

Calories25 kcal

L-Glutamine6000 mg

Full panel ↓

Sold as food, not medicine — no regulator checked that it works

6000mgL-Glutamine
25kcalCalories

Per serving · 1 scoop (6 g)

At a glance

From the label as printed · NIH DSLD

What it is

Protein powder

Per serving

6000 mg l-glutamine

167 servings per container

How to take it

On workout days, consume two (2) servings immediately after exercise.

One serving: 1 scoop (6 g)

Full directions ↓
Label warning

WARNING: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

All warnings ↓
Independent testing

No third-party testing mark on the label

Marks like NSF Certified for Sport or Informed Sport mean batches are tested for banned substances. Their absence does not mean a product is contaminated — only that nobody independent has said it isn’t.

Good to know
  • Sports nutrition — claims are the manufacturer’s
  • No Artificial Sweeteners, Flavors or Colors
  • Adult (18 - 50 Years)

Supplement Facts

Supplement Facts

Serving size 1 scoop (6 g)

Servings per container 167

Amount per serving% DV
Calories25 kcal†
L-Glutamine6000 mg†

† Daily Value not established.

Transcribed from the label by the NIH Office of Dietary Supplements. What a label says is not independently verified. See the original label

How to take it

  • Directions: For adults, mix one (1) rounded scoop (6 g) into 4-8 ounces of water or your favorite beverage one to two times daily. On workout days, consume two (2) servings immediately after exercise.
  • POST WORKOUT For maximum benefits on workout days, consume two (2) servings immediately after exercise.

The manufacturer’s directions, from the label.

Warnings on the label

  • WARNING: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.
  • Discontinue use and consult your doctor if any adverse reactions occur.
  • Not intended for use by persons under the age of 18.
  • Keep out of reach of children.
  • Tamper resistant: do not use if seal under cap is broken or missing.
  • As a reminder, discuss the supplements and medications you take with your health care providers.

What no one has checked

Contents are declared by the manufacturer and are not verified by a regulator. Independent testing has repeatedly found amounts that differ from the label, and products that contain substances banned in sport. Third-party certification, where a product has it, is shown on this page.

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Details

BrandMET-Rx
UPC7 86560 36729 5
NIH label ID66281
Label recorded2016-11-21

Source: Dietary Supplement Label Database · NIH Office of Dietary Supplements · retrieved 2026-09-21 · not reviewed by a nutrition professional