Venlafaxine
Relative Infant Dose (RID)
7%
✓ Verified
Milk-to-Plasma Ratio (M:P)
2.75
✓ Verified
What This Means
Venlafaxine transfers about 7% of the maternal dose through breast milk. This is generally considered acceptable, but discussing timing of doses with your healthcare provider may be helpful. The M:P ratio of 2.75 means the drug concentrates more in breast milk than in blood, meaning more may reach your baby. Consider discussing timing (e.g., taking after a feeding) with your healthcare provider.
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 NBK501192. Ilett 2002: M/P 2.5 (V), 2.7 (ODV); RID 6.4% (5.5-7.3%). Multiple studies show 5.2-8.1%. • LactCheck by Benevolence Labs