During pregnancy, current guidelines (ACOG, NHS, WHO) recommend limiting caffeine to 200mg daily โ about 1-2 cups of coffee.
Why: caffeine crosses the placenta and reaches the fetus. The fetus cannot metabolise caffeine. High caffeine intake (over 300mg daily) is associated with low birth weight and miscarriage risk.
Where caffeine comes from:
- Brewed coffee (8 oz): 95-200mg
- Espresso shot: 60-75mg
- Black tea (8 oz): 40-50mg
- Green tea (8 oz): 30-50mg
- Cola (12 oz): 35mg
- Energy drinks: 80-300mg
- Dark chocolate (1 oz): 20mg
- Pre-workout supplements: 200-400mg (avoid in pregnancy)
What to do:
- Switch to half-decaf if you are a heavy coffee drinker
- Choose smaller cups (8 oz, not 16 oz)
- Limit to morning hours (caffeine half-life is longer in pregnancy)
- Track total daily intake including hidden sources
Decaf is fine: contains 2-15mg per cup โ negligible.
Herbal teas: most are safe. Avoid licorice root, ginseng, dong quai, black cohosh. Peppermint, ginger (good for nausea), and rooibos are fine.
First trimester: be most cautious โ this is when miscarriage risk is highest.
If you cannot give up caffeine, do not panic โ moderate intake is acceptable. Most evidence shows the risk increases above 300mg daily.
Read our full evidence-based guide on pregnancy for the complete picture.
View Full Guide โWe write from peer-reviewed research and clinical guidance. These links let you read the underlying evidence yourself rather than taking our word for it.