About methionine
Essential sulfur-containing amino acid
Used for
- Used as a nutritional supplement to provide methionine.
- Sometimes used under specialist supervision for specific metabolic disorders.
Usual adult dose
Supplement doses vary; no standard dose is established for general use.
Usual dose in children
Specialist-directed dosing for metabolic disorders; no standard dose.
Common side effects
- Nausea or vomiting
- Diarrhea
- Irritability
Important warnings
- High doses may increase blood homocysteine.
- Use for metabolic disorders requires specialist monitoring.
- Not a substitute for a balanced diet.
Pregnancy
Adequate dietary methionine is needed; supplement safety at high doses is not established.
Breastfeeding
Adequate dietary methionine is needed; supplement safety at high doses is not established.
Interactions
- Levodopa absorption may be reduced by high-protein intake, including amino acid supplements.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.