The time to wait depends on how much alcohol you consumed. Alcohol passes into breast milk at concentrations similar to those in your bloodstream, and most experts recommend waiting until your body has metabolized the alcohol before breastfeeding.
For moderate consumption (one standard drink), many health organizations suggest waiting at least 2–3 hours before nursing. For larger amounts, the wait time increases—roughly one additional hour per standard drink consumed. A standard drink is defined as 12 oz of beer, 5 oz of wine, or 1.5 oz of distilled spirits.
The key principle is that alcohol concentration in milk mirrors your blood alcohol level. Once you feel sober, the alcohol has largely cleared your system. Some resources recommend using a simple rule: "pump and dump" (expressing and discarding milk) isn't necessary if you're waiting to breastfeed, since the alcohol clears naturally over time.
Occasional moderate drinking is considered compatible with breastfeeding by major health authorities when you time it appropriately. However, heavy drinking or frequent alcohol consumption raises concerns about both the immediate effects on the baby and the parent's ability to safely care for the infant.
To be safest, plan nursing before drinking, or express milk ahead of time for feeding while you wait for alcohol to clear. If you're uncertain about your specific situation, consulting a healthcare provider or lactation specialist can give personalized guidance based on the amount consumed and your individual circumstances.