Lamotrigine
⚠Medium RID — 9.5% RID
Relative Infant Dose (RID)
9.5%
✓ Verified
Milk-to-Plasma Ratio (M:P)
0.56
✓ Verified
What This Means
Lamotrigine transfers about 9.5% 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 NBK501268 (Nov 2025). Studies: 9.2% avg (range 3.1-21.1%), 9% (range 2-20%), 7.6% (range 5.7-9.9%). • LactCheck by Benevolence Labs