Source Naturals, N-A-G, 500 mg, 120 Tablets, N-Acetyl glucosamine 500 mg per tablet

N-A-G from Source Naturals is supplied as tablets in a 120 Tablets package. The verified label identifies N-Acetyl glucosamine 500 mg per tablet. The serving used for the Supplement Facts is 1 Tablet, giving 120 labeled servings per container. N-acetyl-D-glucosamine (NAG) is an acetylated amino sugar and a building block used in glycosaminoglycan biology. It differs chemically from glucosamine sulfate and hydrochloride products. Research has examined NAG in connective-tissue and gastrointestinal contexts, but human evidence is limited and formulation-specific. A product should therefore be identified by the exact N-acetyl form rather than grouped indiscriminately with all glucosamine supplements. The most useful way to compare this exact product with scientific literature is to match the chemical or botanical form, the declared amount per serving, and the duration of intake. A different extract, salt, delivery system or serving size can produce a different exposure even when two products share a similar front-label name. Mechanistic plausibility is not the same as a demonstrated clinical benefit, and positive findings in one population should not be generalized automatically to every healthy adult. For a single-dominant-ingredient product, the central quality questions are identity, dose, chemical form or standardization, and whether the amount is reasonably comparable with doses used in human research. This keeps the scientific description focused on the actual product rather than extrapolating from unrelated formulations. Product-specific interpretation should also consider total intake from food and other supplements, age, baseline nutritional status, health conditions and concurrent medicines. The formulation may be useful as a convenient way to supply its declared ingredients, but it should not be presented as a treatment, cure or guaranteed outcome.

Take 1 tablet 1 to 3 times daily.

Do not use if a tamper-evident seal is broken or missing. Keep out of reach of children. If pregnant, breastfeeding, taking medication, or managing a medical condition, consult a healthcare professional before use.