A handful of herbal teas are generally considered safe during pregnancy when you keep intake moderate, typically no more than two cups per day. Ginger, peppermint, and lemon balm are among the most widely used options. But “herbal” doesn’t automatically mean harmless, and some popular teas, including hibiscus and certain chamomile blends, carry real risks worth knowing about.
No herbal tea has been rigorously tested in clinical trials on pregnant women, so safety recommendations come from long histories of traditional use rather than hard proof. Herbal teas brewed from hot water and dried leaves contain the lowest concentrations of active compounds compared to supplements, tinctures, or extracts. That lower concentration is part of what makes moderate tea drinking a lower-risk choice. Still, the first trimester deserves extra caution: rapid cell development during those early weeks means any bioactive compound has greater potential to interfere.
Ginger Tea for Nausea
Ginger is the most studied herbal remedy for pregnancy-related nausea and vomiting. Most clinical research points to a safe daily intake of about 1,000 mg of ginger, which translates to roughly four cups of prepackaged ginger tea (using standard 237 mL cups) or one teaspoon of freshly grated ginger steeped in water. If you’re sipping ginger tea specifically for morning sickness, one to two cups a day is a reasonable amount that stays well within that threshold.
Ginger works by calming the smooth muscle in the digestive tract, which helps reduce the waves of nausea many women experience in the first and second trimesters. It’s worth noting that ginger tea bags vary in potency across brands, so sticking to a couple of cups rather than drinking it all day is a practical safeguard.
Peppermint Tea for Digestion
Peppermint tea is one of the most commonly consumed herbal teas during pregnancy, and it falls into the “generally recognized as safe in moderate amounts” category. Many women reach for it to ease bloating, gas, or the general digestive discomfort that becomes more common as pregnancy progresses. One to two cups a day is the standard recommendation.
One thing to be aware of: peppermint can relax the valve between your esophagus and stomach. If you’re already dealing with heartburn or acid reflux, which is common in later pregnancy, peppermint tea could make that worse for some people. If reflux isn’t an issue for you, it’s a solid caffeine-free option.
Lemon Balm Tea for Relaxation
Lemon balm, a member of the mint family, is traditionally used for its calming properties. It’s a popular choice for mild anxiety or trouble sleeping during pregnancy. Like other herbal teas, it’s considered safe at moderate intake (one to two cups daily) based on its long history of use, though it hasn’t been formally tested in pregnancy-specific clinical trials.
If you’re buying lemon balm tea, look for single-ingredient products or blends where you recognize every ingredient on the label. Some “relaxation” or “sleepytime” blends mix in herbs like valerian or passionflower that have less established safety profiles during pregnancy.
Chamomile Tea: Proceed With Caution
Chamomile is where things get more complicated. It’s one of the most popular herbal teas in the world, and many people assume it’s perfectly safe. In small, occasional amounts it likely is. But there are documented concerns. A case report published in Cureus described two pregnant women whose chamomile tea consumption was linked to premature constriction of a key blood vessel in the fetus (the ductus arteriosus), which is critical for fetal circulation.
Roman chamomile specifically appears on lists of herbs that may stimulate uterine contractions. German chamomile, the more common variety found in tea bags, is considered less problematic, but the two are sometimes blended together in commercial products without clear labeling. If you enjoy chamomile, keeping it to an occasional cup rather than a daily habit is a reasonable approach, and it’s worth checking the label to confirm which variety you’re drinking.
Red Raspberry Leaf Tea and Timing
Red raspberry leaf tea has a reputation as a “pregnancy tea” that strengthens the uterus and prepares it for labor. The reality is more nuanced. A review of 13 studies spanning 75 years confirmed that raspberry leaf does affect uterine smooth muscle, but the review did not find conclusive evidence that it actually helps with labor. One small study of fewer than 200 women found it shortened the second stage of labor by about 10 minutes and reduced the use of forceps when consumed from 32 weeks onward, but no other studies have replicated those findings.
More recently, a comprehensive review concluded there is currently no evidence suggesting women should take raspberry leaf preparations during pregnancy, and raised the possibility that raspberry extracts might actually inhibit cervical ripening, the softening and thinning of the cervix that needs to happen before labor. This is essentially the opposite of what many women are hoping for when they drink it.
If you’ve already been drinking small amounts in your third trimester, that’s probably not harmful. But starting it specifically to speed up labor isn’t supported by the evidence, and drinking it in the first or second trimester is not recommended since its uterine-stimulating properties could be problematic earlier in pregnancy.
Herbal Teas to Avoid
Several herbal teas contain ingredients that can stimulate uterine contractions or disrupt hormone levels. These are the ones to skip entirely:
- Hibiscus tea contains plant-based estrogens that can interfere with hormone balance. These compounds compete with your body’s own estrogen and can act as an emmenagogue, meaning they promote menstrual flow. This is particularly risky during pregnancy.
- Black cohosh is sometimes marketed for women’s health but is a known uterine stimulant.
- Dong quai (sometimes called “female ginseng”) can induce uterine contractions.
- Yarrow, motherwort, and rue all have documented uterine-stimulating effects.
- Shepherd’s purse and wild yam are specifically noted as uterine stimulants in herbal safety databases.
Some less obvious ingredients also appear on caution lists. Cinnamon in the concentrated amounts found in herbal teas (not the small pinch you’d sprinkle on food) and hops, common in “sleepy” tea blends, can both stimulate the uterus. Even whole-leaf aloe vera preparations, sometimes found in detox teas, carry this risk. The topical gel is fine, but ingesting aloe in tea form is not recommended.
Reading Labels on Commercial Blends
Teas marketed as “pregnancy tea” or “mama tea” typically feature ingredients like raspberry leaf, peppermint, ginger, and lemon balm. These blends are generally put together with pregnant women in mind, but it’s still worth scanning the full ingredient list. Some blends include herbs that sound harmless but have less data behind them, or they mix in small amounts of ingredients like chamomile or cinnamon that you might want to limit.
The NHS specifically warns that caffeine content varies widely across herbal tea brands. Some herbal teas contain no caffeine at all, while others have surprisingly high levels, especially blends that include green tea leaves or yerba mate alongside herbal ingredients. Check the packaging rather than assuming “herbal” means caffeine-free.
One important distinction: tea bags steeped in hot water are very different from herbal tinctures, which are alcohol-based extracts with much higher concentrations of active compounds. Tinctures should be avoided during pregnancy both because of the concentrated plant compounds and the alcohol content itself. Stick with standard brewed tea from bags or loose leaves.
The Two-Cup Rule
Across the board, the general guidance is to limit herbal tea to two cups per day during pregnancy. This isn’t an arbitrary number. Herbal teas brewed from hot water contain the lowest concentration of active plant compounds compared to any other form of herbal preparation. At one to two cups, you’re getting trace amounts of bioactive ingredients, which is generally not enough to cause problems. Drinking large quantities, on the other hand, can introduce enough of these compounds to interfere with metabolic processes.
Variety helps too. Rotating between different safe teas rather than drinking four cups of the same one every day keeps your exposure to any single herb’s active compounds low. And if you’re in your first trimester, being more conservative makes sense. The rapid cellular development happening during those first 12 weeks means even mild bioactive compounds have greater potential impact than they would later in pregnancy.