The Medical Advisor

Your body uses N-acetyl cysteine (NAC) to make its own antioxidants. Medically, it is used to treat acetaminophen toxicity; it is almost 100% effective as long as it’s given within the first eight hours after overdose  [ 1 ,   2 ]. For all other purposes, NAC is an unapproved supplement. Preliminary evidence may look promising (and in some cases, very promising!), but future studies may find that NAC is actually ineffective for some of these purposes. It’s important to talk to your doctor before adding NAC to your health strategies, as it may have unexpected interactions. Potential Benefits of N-Acetyl Cysteine (NAC) Note that in the list below, acetaminophen toxicity is the only FDA-approved use of NAC. If you suspect that you or someone you know has overdosed on acetaminophen,  call poison control and seek medical attention immediately.  Do not attempt to self-administer NAC. If you want to incorporate NAC into your daily health routine, talk to your doctor first. They can help you i