Jarrow Formulas N-A-C Sustain delivers 600 mg of N-Acetyl-L-Cysteine (NAC) per tablet in a distinctive bi-layer format. Each tablet combines a quick-release layer — accounting for one third of the dose — with a sustained-release layer that makes up the remaining two thirds, allowing NAC to be released gradually rather than all at once. The pack contains 60 tablets.
NAC is an amino acid derivative and a precursor to glutathione, a compound naturally present in the body. Jarrow Formulas is a well-regarded US supplement brand known for its attention to ingredient quality and innovative delivery formats, and this bi-layer Sustain technology is a good example of that approach.
Each tablet serves as a single daily serving, making this a straightforward 60-day supply. It will appeal to those who prefer their supplements in tablet form and want a product that goes beyond a standard immediate-release capsule. Suitable for vegetarians checking label suitability prior to purchase.




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