Free lactation tool
Alcohol & breastfeeding wait time calculator
Find out roughly how long to wait before nursing or pumping after a drink, based on CDC, AAP, and LactMed guidance.
Standard drinks consumed
1
standard drinks
1 standard drink = 12 oz beer (5% ABV), 5 oz wine (12% ABV), or 1.5 oz spirits (40% ABV).
Your approximate body weight
Under 130 lb
130–180 lb
Over 180 lb
Lower body weight generally means alcohol clears more slowly — we’ll lean toward the higher end of the range for you.
Drinking pattern
With food, paced
Quickly, empty stomach
Food slows alcohol absorption, so sipping with a meal is gentler than drinking quickly on an empty stomach.
Suggested wait before nursing
2–3 hours
From the time you finish your last drink
Generally low concern
30–60 min
Time until alcohol peaks in your milk
No
Pumping and dumping does not speed clearance
What’s happening in your body
Quick reference: drinks to wait time
| Standard drinks | Suggested wait | Notes |
|---|---|---|
| 1 drink | 2–2.5 hours | Generally low risk to infant |
| 2 drinks | 4–5 hours | Consider expressed milk backup |
| 3 drinks | 6–7.5 hours | Use stored milk if baby feeds sooner |
| 4 drinks | 8–10 hours | Considered binge-level; plan ahead |
| 5+ drinks | 10+ hours | May affect let-down and supply |
Guidance synthesized from the CDC, the American Academy of Pediatrics, and the LactMed database (NIH). This tool estimates timing only — it does not calculate blood alcohol concentration.
This is general guidance, not medical advice. Individual alcohol clearance varies with metabolism, liver function, hydration, and how much and how fast you drank. If you’ve had more than 1–2 drinks, were drinking quickly, or feel any effects of alcohol, wait until you feel completely clear-headed before nursing — and when in doubt, feed previously expressed milk instead. Frequent or heavy drinking while breastfeeding should be discussed with a doctor, lactation consultant, or pediatrician.
Want a deeper plan for nights out or events?
Explore our full guide on alcohol and breastfeeding, or try our Breast Milk Storage Calculator to plan your backup supply.
Read the full guide below