RID Calculator (Relative Infant Dose)
RID shows what fraction of the maternal weight-adjusted dose (mg/kg/day) reaches the infant via breast milk
About this calculator
Hale thresholds: under 10% usually compatible, 10–25% acceptable with monitoring, over 25% usually avoided.
Sources
- NIH LactMed – Drugs and Lactation Database
- Hale TW. Medications and Mothers' Milk, Springer 2019.
- e-lactancia.org – APILAM (peer-reviewed risk assessment)