N-A-G 500 mg

N-A-G 500 mg

Source Naturals4.7 (643 ratings)
Format:Tablet Quantity: 120 Tablet(s) · 120 servings
Goals
$22.50 $0.18 per serving
AmazonLowest$22.50iHerb$25.17Vitacost$25.69

Product analysis

61 out of 100

N-A-G 500 mg may help skin hydration in women with dry skin, although the small studies leave broader skin benefits uncertain.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The ingredient form is unspecified, limiting confidence in its exact type. There is too little information for a dependable form-quality comparison.

Ingredient Transparency63

The serving amount is clearly disclosed. The unspecified form leaves the exact type difficult to compare.

Value For Money100

The serving offers favorable value for N-acetylglucosamine. Its relative cost compares well for the declared ingredient contribution.

Customer Satisfaction79

Customer feedback is very positive on average. Hundreds of ratings provide a useful satisfaction picture, without proving a skin benefit.

Product Focus74

The single-ingredient formula is concentrated on skin health. Limited hydration findings in women with dry skin leave broader improvements uncertain.

Format
Tablet
Container
120 Tablet(s)
Per serving
$0.18
Customer rating
4.7 · 643 ratings
Report analysis

Goals

Skin Health
Skin Health
Impact
High effect
B+ Ingredient FitF PathwaysA EvidenceA+ Formulation Logic
N-Acetyl Glucosamine · 500 mg

N-acetylglucosamine has limited evidence for improving cheek hydration in women with dry skin. Small studies, baseline differences and inconsistent findings across measurements limit confidence in broader skin improvements. The 500 mg per serving matches one studied daily exposure, without establishing the same regimen or a proven optimal amount.

How this product is rated for Skin Health

Ingredient fit80

The declared active ingredients focus on the roles included for skin health. The relevant declared amounts provide partial coverage of the saved exposure comparison.
Goal fit
The declared active ingredients focus on the roles included for skin health.
Dose adequacy
The relevant declared amounts provide partial coverage of the saved exposure comparison.

Pathways19

The strongest saved connection is to Dermal hyaluronan and water binding. Coverage across other roles is limited.
Depth
The strongest saved connection is to Dermal hyaluronan and water binding.
Breadth
None of the mapped pathways meets the saved coverage threshold.

Evidence95

N-Acetyl Glucosamine leads the saved evidence finding. Accepted preparation matches do not remove the ingredient-specific limitations described above.
Evidence strength
N-Acetyl Glucosamine provides the leading evidence contribution in the saved comparison; its clinical limitations still apply.
Studied preparation
The saved finding accepts the preparations used for its included ingredients; it does not establish that every labelled preparation matches a clinical trial.

Formulation logic100

The saved checks find no missing required partner or configured conflict. The included amounts pass the minimum comparison screen.
Partner coverage
The included ingredients do not lack a required partner under the saved finding; this does not establish added benefit from combining them.
Conflicts
No configured ingredient conflict was triggered by the supplied facts.
Effective doses
All ingredients included in this amount screen meet its minimum comparison level; that level is not a proven effective dose.
Study evidence

Ingredients

IngredientAmount per servingScore
N-Acetyl Glucosamine
500 mg 85
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
N-Acetyl Glucosamine · 500 mg OverallScore85
B- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyA+ Value
Each serving provides 500 mg of N-acetyl glucosamine, and the product declares shellfish. The whole-product cost works out to about $0.19 per 500 mg of the ingredient.
How this ingredient is rated

Active Ingredient Quality & Bioavailability74

The recorded name specifies N-acetyl glucosamine but does not identify the D isomer. The product declares shellfish; that declaration alone does not establish the N-acetyl glucosamine source.
N-Acetyl-D-Glucosamine Isomer Specificity
The recorded name specifies N-acetyl glucosamine but does not identify the D isomer.
Source and Allergen Disclosure
The product declares shellfish; that declaration alone does not establish the N-acetyl glucosamine source.

Dose, Safety & Label Transparency90

The amount of N-acetyl glucosamine is separately disclosed at 500 mg per serving.
NAG Potency per Serving
A serving supplies 500 mg of N-acetyl glucosamine.
Label Transparency and Blend Clarity
The amount of N-acetyl glucosamine is separately disclosed at 500 mg per serving.

Value100

The whole-product cost corresponds to about $0.19 per 500 mg of N-acetyl glucosamine, based on the labeled amount per serving.
Price per 500mg of N-Acetyl Glucosamine
The whole-product cost corresponds to about $0.19 per 500 mg of N-acetyl glucosamine, based on the labeled amount per serving.
View ingredientView products
76 Performance

G.I. Integrity

Pure Encapsulations

The formula is a broader alternative when digestive-support ingredients are desired, but it is not an across-the-board upgrade for a focused skin goal. Clearly identified shellfish-derived N-acetyl-D-glucosamine and complementary digestive ingredients create a focused formula.

71 Performance

Glucosamine Chondroitin Formula

Country Life

Glucosamine Chondroitin Formula is a broader alternative when joint-support ingredients are desired, but it is not an across-the-board upgrade for a focused skin goal. N-acetyl-D-glucosamine, chondroitin, and other glucosamine forms provide a substantial but broad joint-support formula.

71 Performance

GI-Revive

Designs for Health

GI-Revive is a broader alternative when digestive-support ingredients are desired, but it is not an across-the-board upgrade for a focused skin goal. The powder combines substantial amounts of several digestive-support ingredients, but many extracts lack source or standardization details.

87 Budget

N-A-G 700 mg

Jarrow Formulas

N-A-G 700 mg lowers the serving cost while retaining N-acetyl glucosamine as a central ingredient. The active D-isomer is clearly identified at a substantial supportive amount in a focused formula.

84 Budget

N-Acetyl Glucosamine

NutriCology

Fewer than three supplied candidates cost less per serving than N-A-G 500 mg, so n-acetyl glucosamine should not be viewed as a true cheaper choice. The active D-isomer is clearly identified at a useful supportive amount in a focused formula.

73 Budget

Healthy Gut Capsules With Vitamin D

Terra Origin

Fewer than three supplied candidates cost less per serving than N-A-G 500 mg, so healthy gut capsules with vitamin d should not be viewed as a true cheaper choice. Zinc carnosine, glutamine peptide, N-acetyl glucosamine, and soothing botanicals create a coherent gut-support formula, but many secondary doses are modest.

71 Value

IntestiNew

Renew Life

IntestiNew may suit someone who values a multi-ingredient digestive formula, but its higher serving cost makes it weaker value than N-A-G 500 mg for N-acetyl glucosamine alone. A substantial L-glutamine serving gives the powder a strong intestinal-support foundation, with N-acetyl glucosamine adding a complementary but modest amount.

75 Value

Healthy Gut Berry

Terra Origin

Healthy Gut Berry may suit someone who values a multi-ingredient digestive formula, but its higher serving cost makes it weaker value than N-A-G 500 mg for N-acetyl glucosamine alone. A substantial glutamine serving and a clearly measured N-acetyl glucosamine dose anchor a coherent gut-support powder.

59 Value

Leaky Gut Formula

Codeage

Leaky Gut Formula may suit someone who values a multi-ingredient digestive formula, but its higher serving cost makes it weaker value than N-A-G 500 mg for N-acetyl glucosamine alone. Zinc L-carnosine, butyrate, probiotics, and soothing botanicals create a coherent digestive theme, but most supporting actives are lightly dosed.

Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. A randomized, investigator-blinded, controlled pilot study to evaluate the safety and efficacy of a poly-N-acetyl glucosamine-derived membrane material in patients with venous leg ulcers.
    Kelechi TJ; Mueller M; Hankin CS; Bronstone A; Samies J; Bonham PA · Journal of the American Academy of Dermatology · 2012
    Randomized trial82 participantsSkin Health forN-Acetyl Glucosamine
  2. Poly-N-acetyl glucosamine nanofibers for negative-pressure wound therapies.
    Fulco I; Erba P; Valeri RC; Vournakis J; Schaefer DJ · Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society · 2016
    Randomized trial20 participantsSkin Health forN-Acetyl Glucosamine
  3. Preparation, characterization, and moisturizing effect of liposomes containing glucosamine and N-acetyl glucosamine.
    Malaekeh-Nikouei B; Golmohammadzadeh S; Salmani-Chamanabad S; Mosallaei N; Jamialahmadi K · Journal of cosmetic dermatology · 2014
    Clinical trialSkin Health forN-Acetyl Glucosamine
  4. The effect of N-acetyl-glucosamine on stratum corneum desquamation and water content in human skin.
    Mammone T; Gan D; Fthenakis C; Marenus K · Journal of cosmetic science · 2009
    Clinical trialSkin Health forN-Acetyl Glucosamine
  5. Reduction in the appearance of facial hyperpigmentation by topical N-acetyl glucosamine.
    Bissett DL; Robinson LR; Raleigh PS; Miyamoto K; Hakozaki T; Li J; Kelm GR · Journal of cosmetic dermatology · 2007
    Randomized trial50 participantsSkin Health forN-Acetyl Glucosamine