Coffee During Pregnancy: How Much Caffeine Is Safe?

If you are pregnant and love coffee, the most common official advice is clear: keep your total caffeine intake under 200 mg a day, from all sources. The European Food Safety Authority (EFSA), the American College of Obstetricians and Gynecologists (ACOG) and the UK’s NHS all point to that figure. In practice, that can mean one or two cups of coffee, depending on how strong they are and what else you eat and drink.

This guide explains where the 200 mg figure comes from, how to count caffeine in everyday drinks, what research has found, and how things change after birth if you breastfeed. Your own doctor or midwife knows your situation best, so use this as background for that conversation, not a replacement for it.

Key takeaways

• EFSA, ACOG and the NHS advise limiting caffeine to 200 mg a day or less during pregnancy.
• The limit counts all sources: coffee, tea, cola, energy drinks, chocolate and some medicines.
• Your body clears caffeine more slowly during pregnancy, especially in the third trimester.
• Some observational studies have linked even moderate intakes to slightly smaller babies, so many experts suggest staying well within the limit.
• Decaf is low in caffeine but not completely caffeine-free.

In this article

1. What the official guidance says
2. How much caffeine is in your drinks
3. Why caffeine is limited in pregnancy
4. What the research shows
5. Caffeine while breastfeeding
6. Practical tips for coffee lovers
7. FAQ

What the official guidance says

For comparison, EFSA considers up to 400 mg a day safe for healthy adults in general, but explicitly excludes pregnant women from that figure. So the pregnancy limit is roughly half the usual adult reference point.

How much caffeine is in your drinks

Caffeine content varies a lot with the bean, the brewing method and the cup size, which is why counting cups alone can be misleading. The NHS gives these approximate figures:

The US Food and Drug Administration (FDA) notes that a 12-ounce cup of regular brewed coffee can contain anywhere from about 113 to 247 mg, and decaf usually contains about 2 to 15 mg per 8-ounce cup. That means one large coffee-shop drink can reach 200 mg on its own.

A sample day under 200 mg

• One mug of filter coffee in the morning: about 100 to 140 mg
• One cup of black tea in the afternoon: about 75 mg
• Total: about 175 to 215 mg, which may already reach the limit

Swapping the afternoon tea for a decaf or a caffeine-free herbal option (check with your midwife about herbal teas) keeps you comfortably below it.

Why caffeine is limited in pregnancy

Caffeine passes through the placenta to the baby, and a developing baby has very limited ability to break it down. At the same time, your own metabolism changes. A study in the Journal of Clinical Pharmacology measured caffeine and its breakdown products across pregnancy and found that caffeine levels rose relative to dose between the first and third trimesters, consistent with slower caffeine metabolism later in pregnancy. In everyday terms, the same cup of coffee stays in your system longer than it did before you were pregnant.

That slower clearance can also make you more sensitive to caffeine’s familiar side effects, such as a racing heart, heartburn and trouble sleeping, which are already common during pregnancy.

What the research shows

Studies in pregnancy are almost all observational, because it would not be ethical to give pregnant women high doses of caffeine in a trial. They can show associations, not prove that caffeine causes a given outcome. With that in mind, here is what several well-known studies found.

Birth weight and growth

The CARE study, published in the BMJ in 2008, followed 2,635 low-risk pregnant women in the UK. Higher caffeine intake was associated with a higher risk of fetal growth restriction, and the authors could not identify a level of intake with no association at all.

A 2021 analysis from the US National Institutes of Health, published in JAMA Network Open, followed more than 2,000 women. Babies of women who consumed about 50 mg of caffeine a day, around half a cup of coffee, weighed on average about 66 grams less than babies of women who consumed none. These differences are small for an individual baby, and the researchers looked only at intakes below 200 mg.

Miscarriage and preterm birth

ACOG’s review concluded that moderate intake under 200 mg a day does not appear to be a major contributing factor in miscarriage or preterm birth. The NHS notes that too much caffeine has been linked to a higher chance of miscarriage and stillbirth, which is why it advises staying within 200 mg.

What it means for you

Taken together, the evidence supports the 200 mg ceiling, and some researchers suggest that less is better when it is easy to cut back. It does not mean that a single strong coffee is cause for panic. If you are worried about how much you have been drinking, your doctor or midwife can talk it through with you.

Caffeine while breastfeeding

Small amounts of caffeine pass into breast milk. EFSA considers single doses of up to 200 mg and habitual intakes of up to 200 mg a day during breastfeeding unlikely to raise safety concerns for the infant. The US Centers for Disease Control and Prevention (CDC) describes up to about 300 mg a day as a low-to-moderate intake that usually does not harm the baby.

The CDC notes that very high intakes, around ten or more cups of coffee a day, have been linked to fussiness, jitteriness and poor sleep in infants. Premature and very young babies clear caffeine more slowly, so mothers of these babies may want to have even less. If your baby seems unsettled after you have had a lot of caffeine, cutting back is a simple first step, and your health visitor, pediatrician or lactation consultant can help.

Practical tips for coffee lovers

1. Count milligrams, not cups. A small home-brewed cup and a large coffee-shop drink can differ by more than 100 mg.
2. Keep one favorite cup. Many people find it easier to enjoy one carefully made coffee each morning than to ration several weak ones.
3. Watch hidden sources. Tea, cola, energy drinks, chocolate and some cold and headache medicines contain caffeine. Ask your pharmacist about medicines.
4. Avoid energy drinks. Their caffeine content varies widely and some contain other stimulants.
5. Switch later cups to decaf. You keep the ritual and the taste with a fraction of the caffeine.
6. Talk to your doctor or midwife if you have heartburn, high blood pressure, trouble sleeping or any other concern.

If you want decaf at home

Decaf is still real coffee: the caffeine is removed from the green beans before roasting, and the flavor comes from the same origins and roasts. If you would like a decaf option, our Peru Decaf is a medium-roast single origin decaffeinated with the Swiss Water Process, with caramel and gentle citrus notes. If you miss your espresso, Decaf Espresso is a water-process decaf roasted dark, with a chocolatey, full-bodied profile. Remember that decaf still contains a small amount of caffeine, so count it in your daily total.

Caffeine during pregnancy FAQ

How many cups of coffee can I have while pregnant?

Most guidance sets a 200 mg daily caffeine limit. Depending on strength and size, that is usually one to two cups of coffee, with nothing else containing caffeine that day.

Is decaf coffee safe during pregnancy?

Decaf contains only a small amount of caffeine, typically about 2 to 15 mg per 8-ounce cup according to the FDA. It counts toward your daily total but makes staying under 200 mg much easier.

Should I stop coffee completely in the first trimester?

Official guidance does not require zero caffeine, but sets a 200 mg limit throughout pregnancy. If morning sickness has already put you off coffee, there is no need to restart. Ask your midwife or doctor about your situation.

Does tea have less caffeine than coffee?

Usually, yes. The NHS estimates about 75 mg in a cup of black or green tea, compared with about 100 mg in instant coffee and often more in filter coffee.

How much caffeine is OK while breastfeeding?

EFSA considers up to 200 mg a day unlikely to cause concern for the baby, and the CDC describes up to about 300 mg as low to moderate. Newborns and premature babies are more sensitive, so less may be wise.

Sources

1. Caffeine, European Food Safety Authority (Scientific Opinion on the safety of caffeine, 2015).
2. ACOG Committee Opinion No. 462: Moderate caffeine consumption during pregnancy, Obstetrics and Gynecology, 2010.
3. Foods to avoid in pregnancy, NHS.
4. Spilling the Beans: How Much Caffeine Is Too Much?, U.S. Food and Drug Administration.
5. CARE Study Group. Maternal caffeine intake during pregnancy and risk of fetal growth restriction: a large prospective observational study, BMJ, 2008.
6. Moderate daily caffeine intake during pregnancy may lead to smaller birth size, NICHD, National Institutes of Health, 2021 (Gleason J.L. et al., JAMA Network Open).
7. Yu T. et al. Pregnancy-induced changes in the pharmacokinetics of caffeine and its metabolites, Journal of Clinical Pharmacology, 2016.
8. Maternal diet and breastfeeding, Centers for Disease Control and Prevention.

Facts checked in October 2026.

This article is for general information only and is not medical advice. If you have a health condition, are pregnant or take medication, ask your doctor before changing your caffeine intake.

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