Complete dosage information for N-Acetylcysteine — threshold, light, common, strong, and heavy dose ranges across 1 route of administration.
Full N-Acetylcysteine profileImportant Safety Notice
Dosage information is for harm reduction purposes only. Individual sensitivity varies greatly. Always start with the lowest effective dose and work your way up slowly. Never eyeball doses — use a milligram scale.
NAC overdose from oral supplements is unlikely to be dangerous. The margin of safety is very wide -- hospitals routinely administer gram-level IV doses for acetaminophen overdose treatment. Taking too many NAC capsules will likely cause: - Nausea and vomiting - Diarrhea and stomach cramping - Potentially: headache, dizziness These symptoms are self-limiting and resolve as the NAC is metabolized. There is no specific antidote needed for oral NAC overdose. Seek medical attention if: - Symptoms are severe or persistent - NAC was taken in combination with other substances - There are signs of allergic reaction (hives, difficulty breathing, facial swelling)
A common oral dose of N-Acetylcysteine is 600–1000 mg.
The threshold dose for N-Acetylcysteine via oral is approximately 100 mg.
N-Acetylcysteine typically lasts 3–6 hours via oral.
