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NAC (N-Acetyl Cysteine)

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N-acetyl cysteine (NAC) capsules in packs of 30 to 100, mostly with 600 mg in the product name, and one product that also contains selenium. Compare the NAC in a single capsule with the NAC in the daily serving, and note how many capsules the pack holds. Where selenium is added, it has its own line in the nutrition table next to the NAC. The ingredient list names the capsule shell and any other ingredients in descending order of weight.

Frequently asked questions

Are NAC, N-acetyl cysteine and N-acetyl-L-cysteine the same ingredient?

Yes, they are different ways of writing the same ingredient name. NAC is the abbreviation, and the L marks the form of the cysteine. A label may use any of them, so compare the milligrams per capsule and the capsules per daily serving rather than the spelling.

How do I read an NAC product that also lists selenium?

The nutrition table gives each ingredient its own line: NAC in milligrams, and selenium in micrograms with its share of the nutrient reference value (NRV), where 55 µg equals 100 % NRV. Compare the NAC per capsule and the selenium per daily serving separately; the ingredient list names the form of selenium used.

How do I compare NAC packs of 30, 60 and 100 capsules?

To find the servings in a pack, divide its capsules by the capsules in one daily serving. With 600 mg per capsule, 100 capsules hold 60 g of NAC in total and 30 capsules hold 18 g. Compare the price per serving or per gram rather than per pack.