People mainly take NAC for mood, anxiety, focus. Based on 881 first-hand reports and 387 meta-analyses & systematic reviews in the medical literature. Ranked #91 of 1,974 overall.
Of reports that state an outcome, 53% are positive.
Of the people who reported each effect, the share who said it got better.
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: Taken together, these preliminary findings suggest that dietetic approaches might be included as part of BD treatment. Also considering the high risk of metabolic disorders in individuals with BD, they should be encouraged to choose healthy dietary lifestyles, including daily intake of fruits, vegetables, seafood and whole grains.
PubMed 35608150 ↗Conclusion: NAC had a major effect on progesterone, endometrial thickness, and LH levels in women with PCOS. Therefore, it may be a potential treatment option.
PubMed 39861414 ↗Conclusion: Overall, NAC treatment appears to be safe and tolerable. Further well designed, larger controlled trials are needed for specific psychiatric and neurological disorders where the evidence is favorable.
PubMed 25957927 ↗Conclusion: These results highlight the paucity of randomised clinical trials comparing different interventions for paracetamol overdose and their routes of administration and the low or very low level quality of the evidence that is available. Evidence from a single trial found activated charcoal seemed the best choice to reduce absorption of paracetamol. Acetylcysteine should be given to people at risk of toxicity including people presenting with liver failure. Further randomised clinical trials with low risk of bias and adequate number of participants are required to determine which regimen results in
PubMed 29473717 ↗As stated by users — not a recommendation. Follow the label or your doctor.
How often each side effect came up across all reports.
Verbatim quotes, shortened only — each links to the original discussion.
“When I get wired up with mania, anxiety, insomnia. I usually take methylfolate and NAC.”
“NAC did wonders for my inflammation and throat issues”
“And NAC fish oil vitamin D and multivitamin.”
“NAC can help increase NO levels by decreasing oxidative stress”
“NAC - 600 mg”
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate