Ginger, peppermint, and rooibos teas are widely considered safe during pregnancy when consumed in moderate amounts. But the herbal tea landscape gets complicated quickly, because many popular varieties carry real risks, and most lack formal safety studies in pregnant people. The key is knowing which teas have the strongest safety profiles, which ones need careful timing or limits, and which to skip entirely.
Ginger Tea: The Strongest Safety Record
Ginger tea is the closest thing to a universally endorsed herbal tea during pregnancy. The American College of Obstetricians and Gynecologists recognizes ginger as a nonpharmacologic option for treating nausea and vomiting in pregnancy. Multiple randomized controlled trials comparing ginger to placebo found it reduces both nausea and vomiting, with study doses ranging from 975 to 1,500 mg per day divided across three or four servings.
In practical terms, that works out to roughly two to three cups of ginger tea daily. A standard cup brewed from fresh ginger root or a commercial ginger tea bag falls well within that range. If you’re dealing with morning sickness, ginger tea is one of the few remedies backed by both clinical evidence and professional guidelines.
Peppermint Tea: Likely Safe, Less Studied
Peppermint tea is naturally caffeine-free and often recommended for nausea, heartburn, and upset stomach during pregnancy. It’s one of the most commonly consumed herbal teas among pregnant people, and no known safety concerns have been raised at normal consumption levels.
The caveat is that the research supporting its benefits hasn’t been done directly in pregnant people or specifically using tea. The positive reputation is based largely on peppermint’s general digestive properties. One to two cups a day is a reasonable amount. In large doses, peppermint can actually worsen reflux in some people by relaxing the valve between the stomach and esophagus, so if heartburn is your main issue, pay attention to how your body responds.
Rooibos Tea: A Good Caffeine-Free Option
Rooibos is widely considered safe during pregnancy and breastfeeding. It’s naturally caffeine-free and rich in polyphenols, which are plant compounds with antioxidant and anti-inflammatory properties. Some evidence suggests rooibos may support bone health by promoting the activity of cells that maintain bone mass, and it may help with cholesterol levels.
The honest limitation: researchers haven’t formally studied rooibos safety in pregnant humans. The only relevant study involved pregnant rats given rooibos for 21 days, which showed no ill effects. That’s reassuring but far from definitive. Sticking to two or three cups a day is a reasonable guideline. It’s a solid swap if you’re looking for a flavorful, caffeine-free alternative to black or green tea.
Red Raspberry Leaf Tea: Timing Matters
Red raspberry leaf tea is traditionally used to tone the uterus and prepare for labor, not as a casual everyday drink. That distinction matters. Because its whole purpose is to affect uterine muscle, drinking it early in pregnancy raises concerns about triggering contractions.
The only randomized controlled trial on red raspberry leaf had participants start at 32 weeks of gestation and continue until labor began. Multiple review articles have concluded there isn’t enough evidence to formally recommend it during pregnancy at all. If you’re interested in trying it in your third trimester, that’s a conversation to have with your provider. Drinking it in the first or second trimester isn’t supported by any evidence and carries theoretical risk.
Chamomile Tea: More Risk Than You’d Expect
Chamomile is one of the most popular bedtime teas, which makes its complicated safety profile during pregnancy surprising to many people. There is evidence suggesting chamomile may stimulate the uterus, and higher rates of preterm labor and miscarriage have been reported with regular use. It may also affect circulation to the baby.
A single cup here and there is unlikely to cause harm, but drinking chamomile daily or in large quantities is not recommended during pregnancy. If you’re using it as a sleep aid, switching to rooibos or a warm milk-based drink is a safer choice.
Nettle Tea: Proceed With Caution
Nettle (sometimes called stinging nettle) tea is popular in pregnancy wellness circles for its iron and mineral content, but the safety evidence is genuinely concerning. A 2015 study noted that nettle may affect the menstrual cycle and could contribute to miscarriage by triggering uterine contractions. That risk is most significant in the first and second trimesters.
Nettle also interacts with several medications, potentially amplifying their effects in dangerous ways. If you’re taking anything else during pregnancy, this interaction risk adds another layer of concern. Some midwives suggest nettle leaf tea late in pregnancy, but there isn’t reliable evidence confirming its safety at any stage. This is one to skip unless your provider specifically recommends it.
Hibiscus Tea: Best Avoided Entirely
Hibiscus tea, with its deep red color and tart flavor, shows up in many herbal blends and iced tea mixes. It’s one of the teas most consistently flagged as unsafe during pregnancy. Animal studies have shown hibiscus can affect hormone levels, including estrogen activity and prolactin levels, in a dose-dependent way. Its effects on reproduction are mixed in the research, but the hormonal disruption alone is reason enough to avoid it while pregnant.
Check ingredient labels on herbal tea blends carefully. Hibiscus is a common addition to fruit-flavored and “wellness” tea mixes, sometimes listed as hibiscus flower or roselle.
Caffeine and Herbal Tea Blends
Pure herbal teas are naturally caffeine-free, but blends that mix herbal ingredients with green, black, or white tea leaves do contain caffeine. The World Health Organization recommends that pregnant people with high caffeine intake (over 300 mg per day) reduce their consumption to lower the risk of pregnancy loss and low birth weight. Most health organizations suggest a practical limit of 200 mg daily, which is roughly one 12-ounce cup of coffee.
If you’re choosing herbal teas specifically to avoid caffeine, read the label to confirm the blend is entirely herbal. “Herbal” on the front of the box doesn’t always mean caffeine-free if the blend includes actual tea leaves.
How to Choose Herbal Teas Safely
The biggest challenge with herbal teas during pregnancy is the lack of formal research. Most herbs simply haven’t been studied in pregnant humans, which means safety claims often rely on traditional use and animal data rather than clinical trials. A few practical strategies help you navigate this:
- Stick to the well-known options. Ginger, peppermint, and rooibos have the most reassuring safety profiles. When in doubt, these are your safest bets.
- Read ingredient lists on blends. Many commercial teas combine multiple herbs. A “relaxation” blend might contain chamomile, valerian, passionflower, or other herbs with unknown safety profiles during pregnancy. Know what’s in your cup.
- Keep it moderate. Even with safe teas, one to three cups per day is a reasonable range. Large quantities of any herbal product introduce unknowns.
- Avoid concentrated forms. Herbal supplements, tinctures, and extracts deliver much higher doses than a brewed cup of tea. The safety information for teas doesn’t extend to these concentrated products.
The difference between a comforting cup of ginger tea and a risky herbal experiment often comes down to which specific plant is in your mug and how much you’re drinking. Keeping your choices simple and your quantities moderate covers most of the risk.