Methadone
⚠Medium RID — 2.8% RID
Relative Infant Dose (RID)
2.8%
✓ Verified
Milk-to-Plasma Ratio (M:P)
0.68
✓ Verified
What This Means
Methadone transfers about 2.8% of the maternal dose through breast milk. This is generally considered acceptable, but discussing timing of doses with your healthcare provider may be helpful.
Important: This information is for educational purposes only. Always consult your healthcare provider before taking any medication while breastfeeding. Do not stop prescribed medications without medical advice.
Data source: LactMed NBK501233 (Dec 2025): Average RID 2.8% (range 1.7-5.6%) from 12 mothers. • LactCheck by Benevolence Labs