Alcohol While Breastfeeding
Same idea as our caffeine timing tool, different molecule: milk alcohol tracks your blood, peaking 30–60 minutes after a drink and clearing at 2–2.5 hours per standard drink — slower at lower body weights. Weight, drinks and start time in; the earliest clear feed out.
Earliest clear feed
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Common questions
How long after drinking can I breastfeed?
The NIH's LactMed guidance is 2 to 2.5 hours per drink, counted from the start of the drink — and the clock runs slower at lower body weights. The calculator below converts your weight, number of drinks and start time into the earliest feed that clears it.
Does pumping and dumping help?
No — alcohol leaves milk as blood alcohol falls, so pumped milk made while you're still drinking carries alcohol. Pump for comfort if needed; discard that milk; the next milk is made fresh from cleared blood.
When does alcohol peak in breast milk?
30-60 minutes after a drink (later with food). Feeding right before a drink is the practical head start.
Method & sources
Timing follows NIH LactMed: wait 2–2.5 hours per standard drink (12 g alcohol); the cited clearance nomogram runs ~2.5 h per drink at 54 kg, ~2.25 h at 68 kg, ~2 h at 82 kg — the calculator interpolates linearly by weight and adds each drink's interval in sequence. Milk alcohol peaks 30–60 min after a drink. Occasional, moderate drinking is the scope here: daily use over about 2 drinks affects letdown and milk production, and 5+ at once is a different conversation — have it with your pediatrician, not a calculator.
The other timing tool: caffeine while breastfeeding · Daily limits: pregnancy caffeine