How much caffeine is safe during pregnancy?
Keep caffeine under 200 mg a day. ACOG says less than 200 mg a day doesn't appear to be a major factor in miscarriage or preterm birth, and the NHS uses the same limit. That's about two cups of instant coffee, but a single 12-ounce brewed coffee can hold 113 to 247 mg, so one large cup may be your whole day.
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The limit: under 200 mg a day
The American College of Obstetricians and Gynecologists (ACOG) says that less than 200 mg of caffeine a day doesn't appear to be a major factor in miscarriage or preterm birth. The UK's NHS uses the same 200 mg limit.
In practice, 200 mg is about two cups of instant coffee, or two and a half cups of black tea. It can also be a single large coffee from a coffee shop, which is where most people go over without knowing it.
The reassuring part for coffee lovers: there's no good evidence tying moderate caffeine to children's brain development. The limit is about lowering the risk of pregnancy loss, preterm birth and low birth weight. So this isn't about giving up coffee. It's about knowing what's in your cup and keeping the daily total under the line.
What the major guidelines say
The advice is unusually consistent across countries:
| Who | What they say |
|---|---|
| ACOG (US obstetricians) | Less than 200 mg a day doesn't appear to be a major factor in miscarriage or preterm birth |
| NHS (UK) | No more than 200 mg of caffeine a day |
| NSW Mothersafe (Australia) | A maximum of 200 mg a day; no evidence of miscarriage under 200 mg, and no evidence of long-term behavioral or developmental effects |
| WHO | For women with high intake (over 300 mg a day), lowering caffeine is recommended to reduce the risk of pregnancy loss and low birth weight |
So the line that most guidelines draw is 200 mg. Your own doctor or midwife may give you a different number if you have a specific health reason, and their advice comes first.
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How much caffeine is in your drink
The catch is that cups aren't standard. Here are approximate amounts:
| Drink or food | Caffeine (approx.) |
|---|---|
| Instant coffee, 1 cup | 100 mg |
| Brewed coffee, 12 oz | 113 to 247 mg |
| Black tea, 1 cup | 75 mg |
| Cola, 1 can | 40 mg |
| Energy drink, 250 ml (8.5 oz) can | 80 mg |
| Dark chocolate, 50 g bar | under 25 mg |
| Decaf coffee, 8 oz | 2 to 15 mg |
Sources: NHS; US FDA.
Look at that brewed coffee line. One 12-ounce cup from a coffee shop can hold your entire 200 mg for the day, or more. The amount depends on the beans, the brew and the size, so a large order can go over the line on its own.
What a day under 200 mg can look like
A few examples that stay under the line, using the table above:
- One small brewed coffee in the morning, then decaf or herbal (from the safer list below) for the rest of the day.
- Two cups of instant coffee (about 200 mg), and nothing else with caffeine.
- One cup of black tea (75 mg), a can of cola (40 mg) and a square or two of dark chocolate.
Easy ways to cut back without giving up the ritual:
- Order a small instead of a large.
- Try half-caf.
- Make the second cup decaf. Decaf still has a little caffeine, 2 to 15 mg per 8 oz, but it's a fraction of regular.
- Count for two days. Many people are surprised by where their caffeine comes from: the afternoon tea, the cola with lunch, the energy drink on a long day.
| Instead of | Try |
|---|---|
| Large brewed coffee (12 oz: 113 to 247 mg) | A small, or half-caf |
| A second regular coffee | Decaf (2 to 15 mg per 8 oz) |
| An energy drink (80 mg per 250 ml can) | Cold sparkling water with lime |
If you rely on coffee to get through first-trimester tiredness, that's understandable. Rest when you can. The NHS notes that tiredness makes nausea worse, so a rest may help in more ways than one.
Herbal teas aren't automatically safe swaps
Switching to herbal tea sounds like the obvious fix, but there's little research on most herbal teas in pregnancy. The NHS suggests no more than 4 cups of herbal tea a day and avoiding teas with liquorice root.
Check any herbal tea or remedy with your doctor or midwife first. Ginger drinks are a common choice for nausea; the NHS lists ginger foods and drinks among the things that help, but suggests checking with a pharmacist before taking ginger supplements. More on easing nausea in foods for morning sickness.
Caffeine in the bigger picture
Caffeine is one of several easy habits in the first trimester, alongside switching to iodized salt, checking your prenatal for iodine and folic acid, and heating deli meats until steaming. None of them need to be perfect. Small, steady changes are the goal.
A few related points:
- Energy drinks have about 80 mg in a 250 ml (8.5 oz) can, and bigger cans have more. Count the caffeine on the label.
- Alcohol is different. Caffeine has a limit. Alcohol doesn't: there's no known safe amount in pregnancy.
- Breastfeeding. Ask your doctor or midwife what limit they suggest once the baby arrives.
If you had more than 200 mg before you knew you were pregnant, don't panic. ACOG's 200 mg line is about regular intake, and the WHO's concern is with high intake over 300 mg a day. Start counting now, and mention it to your doctor or midwife if you're worried. For the rest of the early-weeks food plan, see what to eat for your baby's brain and preparing your body for pregnancy.
Do this
- Count your caffeine for two days using the table, including tea, cola and chocolate.
- Order a small coffee, try half-caf, or make the second cup decaf.
- Keep your daily total under 200 mg.
- Check herbal teas with your doctor or midwife, and skip teas with liquorice root.
- Read energy drink labels and count their caffeine toward your daily total.
When to ask your doctor
Check with your doctor or midwife first if…
- You take regular medicines: ask your pharmacist whether any of them contain caffeine.
- You want to use herbal teas or remedies regularly: check them with your doctor or midwife first.
- You have a high-risk pregnancy or heart condition: ask your provider what limit suits you.
Call your doctor now if…
- You have a racing or pounding heartbeat, chest pain or trouble breathing: call your doctor or 911 now.
- You have vaginal bleeding or fluid leaking: call your doctor or 911 now.
- You have dizziness or fainting: call your doctor or 911 now.
This page is general information, not medical advice. Every pregnancy and every child is different. Ask your doctor, midwife or pediatrician before changing supplements, diet or care.
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In the book: Chapter 7: First Trimester: The Foundation Weeks
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People also ask
Is one cup of coffee a day OK when pregnant?
Usually, yes, as long as your total stays under 200 mg. A cup of instant coffee is about 100 mg. But a 12-ounce brewed coffee can hold 113 to 247 mg, so the size and type matter. A small cup, half-caf or decaf keeps you safely under.
How much caffeine is in a Starbucks or coffee shop coffee?
It varies a lot by brand, beans and size, which is why there's no single number. The FDA's figure for a 12-ounce brewed coffee is 113 to 247 mg. Check the chain's own nutrition information, and assume a large brewed coffee may be your whole day.
Does caffeine affect the baby's brain?
There's no good evidence tying moderate caffeine to children's brain development, and Australian guidance notes no evidence of long-term developmental effects. The 200 mg limit is about lowering the risk of miscarriage, preterm birth and low birth weight.
Is decaf coffee safe during pregnancy?
Decaf has a small amount of caffeine, about 2 to 15 mg per 8 ounces, so it barely touches your 200 mg limit. Swapping your second or third cup for decaf is one of the easiest ways to keep the coffee ritual and cut caffeine.