What is the dosage for methionine supplements?

Adults (18 years and older):

The dietary reference intake recommendation for methionine and cysteine combined is 25 milligrams per gram of protein.

For acetaminophen (e.g., Tylenol®) toxicity, 2.5 grams of methionine has been taken by mouth every four hours for four doses with good results when given within 10 hours after acetaminophen use.

For insomnia, 500 milligrams of methionine has been taken by mouth just before bedtime.

For Parkinson's disease, 5 grams of methionine has been taken by mouth daily for two weeks to six months.

You should read product labels, and discuss all therapies with a qualified healthcare provider. Natural Standard information does not constitute medical advice, diagnosis, or treatment.