Caffeine during pregnancy


High levels of caffeine in your diet can cause your baby to have a low birth weight. It may also increase the chance of miscarriage.

High caffeine levels are also associated with increased blood pressure, heart rate and may cause dehydration.

Foods and drinks containing caffeine include:

  • coffee
  • tea
  • chocolate
  • soft drinks (cola, fizzy orange, fizzy lemonade)
  • energy drinks
  • some herbal teas like green tea

You don't need to cut caffeine out completely, but you should limit how much you have to no more than 200mg a day.

Try decaffeinated tea and coffee, fruit juice or water. Limit the amount of energy drinks you have, as they can be high in caffeine.

When ordering coffee in a café or restaurant, caffeine levels can vary from 80mg to 300mg per cup.

Here is a guide on the estimated amount of caffeine in common drink and snack options:

Food or drink Amount of Caffeine
Food or drink 1 mug of tea Amount of Caffeine 75mg
Food or drink 1 mug of instant coffee Amount of Caffeine 100mg
Food or drink 1 mug of filter coffee Amount of Caffeine 140mg
Food or drink 1 can of cola or diet cola Amount of Caffeine 40mg
Food or drink 1 energy drink Amount of Caffeine 60mg
Food or drink 1 x 50g bar of milk chocolate Amount of Caffeine 25mg
Food or drink 1 x 50g bar of plain chocolate Amount of Caffeine 50mg

Page last reviewed: 15 March 2018
Next review due: 15 March 2021