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Frequently Asked Questions About NAC

What is N-acetylcysteine (NAC)?

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NAC, or N-acetylcysteine, contains sulfur and is a derivative of the naturally occurring amino acid L-cysteine. It serves as a precursor to glutathione-a key antioxidant that provides protection against free radicals and toxins in the body.

What is NAC good for?

How Much NAC Should I Take?

When Should I Take NAC?

Like other amino acid supplements, NAC should be taken either 30 minutes before, or two hours after, eating to avoid competing with protein for absorption. For cold and flu, start taking NAC as soon as symptoms appear.

How Should I Take NAC?

Look for NAC in capsules and tablets, alone or in combination with antioxidants, herbs, and other immune-supportive ingredients.