What's NAC?
N-acetyl cysteine (NAC) comes from the amino acid L-cysteine. Amino acids are building blocks of proteins. NAC has many uses and is an FDA approved drug.
N-acetyl cysteine is an antioxidant that might play a role in preventing cancer. As a drug, it’s used by healthcare providers to treat acetaminophen (Tylenol) poisoning. It works by binding the poisonous forms of acetaminophen that are formed in the liver.
People commonly use N-acetyl cysteine for cough and other lung conditions. It is also used for flu, dry eye, and many other conditions, but there is no good scientific evidence to support many of these uses. There is also no good evidence to support using N-acetyl cysteine for COVID-19.
“What’s NAC?”
Over-the-counter medication that breaks up phlegm and thus helps the lungs get cleared out very fast.
It’s main mechanism is that it is a precursor to glutathione, probably the single most powerful anti-oxidant our body uses to protect itself.
It is also the preferred drug (in IV form) for Tylenol poisoning. Tylenol can destroy the liver in a short time...and NAC, when given in a timely manner, can just about completely short-circuit that process.
FDA wants it off the market (only since the beginning of Covid, of course - it has been available for many years with not a peep from them), but many sellers are ignoring them (unlike Amazon, which got rid of it immediately). I order from Life Extension Foundation myself. https://www.lifeextension.com/vitamins-supplements/item01534/n-acetyl-l-cysteine
9 benefits of NAC: https://www.healthline.com/nutrition/nac-benefits#TOC_TITLE_HDR_5