what is NAC?

NAC (N-acetylcysteine), a by-product of the amino acid cysteine -- NAC is better absorbed than cysteine. NAC stimulates the body's own production of antioxidants and may even be an antioxidant itself. NAC helps to repair cell damage & boost the immune system. NAC also thins the mucus of chronic bronchitis and has been used to protect the liver in acetaminophen overdoses (Tylenol overdoses). It may also be of value for disorders involving damage to brain or nerve cells, such as multiple sclerosis, or tinnitus.

NAC (N-Acetyl-Cysteine), is a precursor of glutathione (which can be used to prevent oxidation in cells -- it also helps trap "Free Radicals" which are known to damage the DNA.

So far, there have been no serious side effects associated with NAC(N-acetylcysteine). At higher dosages, NAC can cause nausea and throwing up (a good reason for anyone starting NAC therapy, to begin at a low dose.)

Currently, NAC (N-Acetyl-Cysteine) is being studied in the US military as a possible preventative to hearing loss.

Preliminary animal studies indicate the N-acetylcysteine (NAC) is effective as a hearing loss preventative in some rodents. It is unclear at this point, however, whether NAC has the same hearing loss benefits in people -- or helps alleviate the hiss, clicks and roar of auditory tinnitus.

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nac & tinnitus (i tried this amino acid, and found it had no effect on my tinnitus)

NAC - Further Information
nac - further information, from the national institute of neurological disorders. (this page may be somewhat difficult for the layperson to interpret.)