Having Green Tea During Pregnancy​: Is it Safe?

Green tea is one of the healthier drinks out there, and so it’s no surprise that many pregnant women want to know if they can continue with their daily cup once they see two lines on a test. The short answer is yes, with some limitations, but here the details are more important than for most everyday drinks. Moderate amounts of green tea during pregnancy are not dangerous, but they do interfere with two important nutrients for a developing baby: caffeine tolerance and folate absorption.

That’s what the evidence says: how much is considered reasonable and how to enjoy green tea without working against your prenatal vitamin.

Is Green Tea Safe During Pregnancy? The Short Answer

Yes, green tea is generally considered safe in pregnancy in moderate amounts, usually described as one to two cups a day. Its caffeine content, which adds to your daily total from coffee, soda, or chocolate, and its catechin content, which can reduce how much folic acid your body absorbs if you drink a lot of it, are the two things to watch.

Neither of these rules out green tea. They’re just saying this is a drink where “moderate” matters more than it does with something like water or milk. Pregnancy classes can also help expectant mothers learn about healthy pregnancy habits, including nutrition, safe physical activity, relaxation, and breathing techniques, with guidance from qualified professionals.

What’s in Green Tea That Matters During Pregnancy

Caffeine Content

Green tea contains less caffeine than coffee, with about 20 to 50 milligrams per 8-ounce cup, versus about 95 to 200 milligrams in the same size cup of coffee. The American College of Obstetricians and Gynaecologists recommends limiting total caffeine intake to less than 200 milligrams a day during pregnancy, a threshold that is consistent with research connecting higher intake with increased risk of miscarriage, low birth weight and preterm birth.

Green tea is low in caffeine, so a cup or two will fit well within that daily limit, assuming you are also counting other sources such as coffee, black tea, and chocolate.

Catechins and Folate Absorption

This is where most people get shocked. Green tea is rich in a family of antioxidant compounds called catechins, the most studied of which is EGCG (epigallocatechin gallate). According to research, EGCG can interfere with an enzyme your body needs to turn folic acid into its active form, and it can also decrease how much folic acid your intestines absorb in the first place.

Folate is arguably the most important nutrient during pregnancy, with sufficient amounts in the first weeks decreasing the likelihood of neural tube defects, such as spina bifida. The main reason to reserve green tea for a moderate amount a day, rather than drinking it freely throughout the day, is that studies examining pregnant women who drank more than three cups of tea a day found measurably lower folate levels in their blood, experts say. If you’re also thinking about how to get a flat tummy after pregnancy, focus on gradual postpartum recovery, balanced nutrition, adequate hydration, and healthcare-provider-approved exercise rather than trying to lose weight quickly during pregnancy.

Iron Absorption

Green tea also has tannins, which are compounds that can reduce the absorption of iron from plant sources such as spinach, lentils and beans. This is good to know, as iron requirements rise during pregnancy to support your increasing blood volume, particularly if you already tend to run low on iron. This effect can be reduced by drinking green tea between meals and not with an iron-rich meal.

Potential Benefits of Green Tea During Pregnancy

Green tea is not just something to be handled with care. It has a few upsides, in moderation, that are worth mentioning.

• Antioxidant protection. EGCG and other catechins assist the body in managing oxidative stress, which can be helpful during a time when your body is working overtime.
• A lighter lift than coffee. L-theanine, an amino acid in green tea, is calming and may help to take the edge off the jitteriness of caffeine.
• Hydration: Green tea counts toward your daily fluid intake, and this is more important during pregnancy than most people think.
• Mood support. * Some research shows that regular green tea drinkers report less low mood, although this research was not done on pregnant women alone.

None of these benefits are an incentive to drink more than the recommended amount. They are a pleasant addition if your routine already includes green tea.

How Much Green Tea Is Safe During Pregnancy?

Most guidance converges on the following:

1. Limit yourself to one to two cups a day, or about 8 ounces each.
2. Add that to coffee, black tea, and chocolate, and keep your total caffeine intake under 200 milligrams a day.
3. Keep it to three cups a day, as that’s the point where research begins to link green tea to significantly lower folate levels.
4. There’s evidence that adequate folic acid intake can cancel out some of the absorption effect even in habitual tea drinkers, so take your prenatal vitamin every day.
5. Keep it away from iron-rich foods (it protects iron absorption).

Tips for Drinking Green Tea Safely During Pregnancy

• Go for regular, organic green tea instead of blends that could have added ingredients you haven’t checked for safety.
• Have it between meals, not at breakfast or dinner, to protect iron absorption.
• If you also drink coffee that day, replace one of your cups of coffee with a cup of decaffeinated green tea.
• Notice what effects caffeine has on you. Pregnancy can alter your sensitivity to caffeine, and what was okay before might not be now.
• Your prenatal vitamin is your first safety net for getting enough folic acid. Take it at the same time every day.

What About Matcha and Green Tea Extract?

Matcha is made from whole, ground green tea leaves instead of steeped and removed leaves, which means a cup of matcha contains more caffeine and more catechins than a regular cup of green tea. If you like matcha, stick to one cup a day, and think of it as a stronger version of the same rules above, not a separate drink that doesn’t relate.

Then there are green tea extracts and supplements. These offer a far more concentrated dose of catechins and caffeine than tea itself, and research on their safety in pregnancy is limited. Green tea supplements are best avoided, and instead enjoy moderate amounts of brewed tea.

Green Tea vs. Other Teas During Pregnancy

It can be helpful to see how green tea stacks up against other popular options. Black tea has a similar caffeine load and similar catechin concerns, so the same one-to-two-cups rule applies there as well. Herbal teas like ginger, peppermint, or rooibos are naturally caffeine-free, not to mention they don’t have the folate absorption problem, so they are often suggested as an easy swap for those days you want a hot drink without tracking caffeine or timing it around meals. If you are looking for herbal teas that can be part of a pregnancy routine, our earlier blog on pregnancy-safe herbal teas on Mom’s Preg Ladder talks about a few choices in more detail.

None of these factors indicate that green tea should be replaced. It just makes you feel better knowing you have a caffeine-free backup for days when you already had coffee or are trying to stretch your daily limit even further.

Building Green Tea Into a Balanced Pregnancy Diet

It is best to think of green tea as a small part of a bigger picture, rather than something you try to manage in isolation. Having a cup alongside a folate-rich meal, like lentils, leafy greens, or fortified cereal, eaten apart from your tea, helps to ensure you are meeting your folate requirements from food as well as your prenatal vitamin. Same with the iron. With a bit of forethought as to when you drink your tea in relation to meals, you can avoid the absorption problems described above without having to give up something you enjoy.

Who Should Be Extra Cautious

A few groups may want to be a little more careful with green tea or check with their doctor before making it a daily habit:

• Those with low levels of iron or an iron deficiency
• Those who are extremely sensitive to caffeine
• Any woman with a history of miscarriage or high-risk pregnancy
• Anyone who is not routinely taking a prenatal vitamin with folic acid

If any of these apply to you, it is worth mentioning your tea habits at your next prenatal visit, rather than assuming that the general guidance covers your situation.

Signs You Might Want to Cut Back

Notice how you feel after you have had the green tea. If you’re having trouble sleeping or feeling jittery with a racing heart, you may be consuming more caffeine than you realise. If you spot these, it’s a reasonable cue to switch one cup for a caffeine-free option and check your total intake over the day.

When to Talk to Your Doctor

If you are drinking more than two cups a day, taking matcha regularly or using a green tea supplement, mention your green tea habits at a prenatal visit. If you have had iron or folate levels that need to be monitored. This is also worth mentioning, as your doctor can take your tea habits into consideration.

A Final Word

For most women, green tea in pregnancy is safe in moderation—one to two cups a day—when paired with a daily prenatal vitamin and some timing awareness around meals high in iron. The concerns around caffeine and folate absorption are real but manageable, not a reason to give up your cup entirely. If you’re having a hard time figuring out how green tea, or anything else you’re eating, fits into your specific pregnancy, the team at Mom’s Preg Ladder answers questions like this about nutrition in our early pregnancy classes and one-on-one consultations.

FAQs on Green Tea During Pregnancy

Can I drink green tea every day during pregnancy? 

One to two cups a day is generally seen as a reasonable amount, yes. Keeping below this limit enables you to avoid issues with folate absorption associated with heavier tea drinking but still benefit from the antioxidants.

Does green tea affect folic acid absorption during pregnancy? 

Yes, more quantities. Catechins in green tea, particularly EGCG, can reduce the absorption and conversion of folic acid in your body. Studies have shown that drinking more than three cups a day can lower your folate levels, so moderation is even more important with this beverage than with most others.

Is matcha safe during pregnancy? 

Matcha is made from the entire leaf, which is ground up, so it has more caffeine and catechins per cup than regular green tea. One cup per day is probably a reasonable limit, and it’s worth counting toward your total daily caffeine intake along with any coffee or other tea.

How much caffeine is in a cup of green tea? 

A typical cup of green tea (8 ounces) contains approximately 20 to 50 milligrams of caffeine, compared to 95 to 200 milligrams in a similar-size cup of coffee. That makes it easier to stay within the recommended 200-milligram limit on caffeine a day during pregnancy.

Should I avoid green tea in the first trimester? 

There is no reason not to drink green tea in the first trimester per se, except the general recommendation of drinking it in moderation. Folate is most important in these early weeks to prevent neural tube defects, so this is a good time to be consistent with your prenatal vitamin as well as your tea habit.