Pregnancy Caffeine Limit Guide
Caffeine crosses the placenta and reaches the developing fetus. Unlike adults, fetuses lack the enzyme CYP1A2 needed to metabolize caffeine efficiently, so it remains in their system much longer. The WHO and American College of Obstetricians and Gynecologists (ACOG) recommend limiting caffeine to 200 mg or less per day during pregnancy. During the first trimester, when neural tube development is occurring, keeping intake under 100 mg is an extra precaution many healthcare providers recommend.
Caffeine is found not just in coffee, but also in tea, sodas, energy drinks, chocolate, and some medications. Even decaf coffee contains a small amount (5–15 mg per cup). Use this calculator to track your total daily caffeine intake against your trimester-specific limit.
Excessive caffeine during pregnancy is associated with an increased risk of low birth weight, preterm birth, and miscarriage, according to multiple studies. When possible, minimize caffeine and replace it with caffeine-free herbal teas or water. If you exceed the limit on a given day, reduce intake over the following days to balance out.
Frequently Asked Questions
WHO and ACOG recommend no more than 200 mg per day. During the first trimester, extra caution is advised, with many providers suggesting under 100 mg.
Decaf still contains 5–15 mg of caffeine per cup, so it is generally safer but not completely caffeine-free. Multiple cups per day can still add up.