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Micronized L-Glutamine 500 mg

Natural Factors

4.7
(523 ratings)
Glutamine 500 mg
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Score 28.0

A micronized 500mg L-Glutamine capsule that offers improved absorption but suffers from a very low dose per serving and a high cost when aiming for clinically relevant daily amounts for its listed goals.

Quantity: 90 Capsule(s)Servings size: 1 Vegetarian Capsule(s) (90 servings)
Selected goals:
Other goals:
Fitness
Muscle Gain
Digestive Health
Immunity

Score 28.0

A micronized 500mg L-Glutamine capsule that offers improved absorption but suffers from a very low dose per serving and a high cost when aiming for clinically relevant daily amounts for its listed goals.

Analysis

This Natural Factors L-Glutamine product offers 500 mg per capsule, distinguished by its micronized form which theoretically enhances solubility and absorption, a positive aspect for bioavailability. However, similar to other 500mg formulations, this dose is significantly below the 5-10 gram threshold commonly recommended for substantial benefits in immunity, fitness, muscle gain, or digestive health, as advised by nutritionists. Despite the micronization, the high cost of $0.11 per 500mg serving means achieving an effective daily dose of 5g would cost $1.10, making it one of the most expensive options per therapeutic dose when compared to bulk powder alternatives.
Pros
  • Micronized form may improve solubility and potentially enhance absorption compared to standard L-Glutamine
  • Convenient capsule form for ease of consumption
Cons
  • Very low dose per serving (500mg), requiring many capsules to reach a therapeutic effect
  • High cost per effective daily dose (e.g., 5g) compared to bulk powder L-Glutamine products
  • Fewer servings per bottle (90) compared to some 100-count alternatives for similar price points
Warnings
  • The micronized form improves absorption but does not compensate for the significantly low dosage. Users should be aware of the high cost for a sustained, higher-dose regimen for the intended goals.
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$10.47($0.11 per serving)
iHerb
$ 10.47
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Effectiveness for goals

Dosage, timing & forms

Safety & interactions

Ingredients

IngredientAmount per serving
L-Glutamine, Micronized
500 mg
Gluten Free Adults 18–50 Vegan Dairy Free Sugar Free Vegetarian
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Categories

As a L-Glutamine supplement, it contributes to the collection, but the very low dosage and high cost per gram for an effective daily intake make it a less desirable option compared to more potent and economical alternatives.

Goals

The micronized form might offer a slight edge in absorption for this small dose, but 500mg is still considerably lower than effective dosages for significant immune system support recommended by experts.
Despite micronization, a 500mg dose is largely insufficient to impact athletic performance, muscle recovery, or reduce post-exercise soreness effectively; higher doses are generally required for noticeable benefits.
While beneficial for gut health, 500mg is too small a dose for therapeutic support or repair of the intestinal lining; higher dosages (5g+) are typically required for substantial impact, as supported by online reviews and nutritionist advice.
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