Ginger tea is the most effective tea for pregnancy nausea, backed by multiple clinical trials showing it can reduce nausea by 63% to 85% within just a few days. Peppermint tea is a solid second option, working through a different mechanism to calm the stomach. Both are considered safe during pregnancy when consumed in moderate amounts.
Ginger Tea: The Strongest Evidence
Ginger is the only herbal tea ingredient with robust clinical trial data specifically for pregnancy nausea. In one double-blind trial, women who took 1,000 mg of ginger daily (split into four doses) experienced a 63% decrease in nausea scores over four days, compared to 42% with a placebo. A second trial found an even larger effect: an 85% decrease in nausea versus 56% with placebo. Vomiting improved too. In a two-week trial, vomiting had completely resolved in 67% of the ginger group by day six, compared to just 20% in the placebo group.
These trials used ginger powder in capsule form, but the active compounds are the same ones you get from fresh ginger root steeped in hot water. To make ginger tea at home, slice about an inch of fresh ginger root, add it to two cups of water, and simmer for 15 to 20 minutes. You can drink it hot or pour it over ice if cold beverages feel easier on your stomach, which many pregnant women find is the case during the first trimester.
The effective daily amount in clinical trials ranged from 975 to 1,500 mg of ginger. A typical cup of homemade ginger tea made with a thumb-sized piece of fresh root falls comfortably within that range. If you’re using store-bought ginger tea bags, the ginger content is lower per cup, so two to three cups a day is reasonable. Splitting your intake across the day rather than drinking it all at once mirrors the dosing pattern that worked best in studies.
Ginger performs about as well as vitamin B6, which is often the first supplement recommended for morning sickness. A head-to-head comparison found no significant difference between the two in reducing nausea and vomiting. This means ginger tea can work as a simple, accessible first step before trying supplements or medication.
Peppermint Tea: A Calming Alternative
Peppermint tea works through a different pathway than ginger. The menthol in peppermint acts as a natural antispasmodic, relaxing the smooth muscles of the digestive tract. It also blocks certain receptors in the gut that trigger the vomiting reflex, the same receptors targeted by some prescription anti-nausea medications. This makes it particularly helpful if your nausea comes with bloating or gas, which are common in early pregnancy.
No harmful effects of peppermint tea on mother or fetus have been documented in the research. However, there’s one caveat: excessive consumption is not recommended in early pregnancy because peppermint has mild properties that could theoretically stimulate menstrual flow in very high doses. A cup or two per day is the general comfort zone. If you have acid reflux, which worsens for many women as pregnancy progresses, peppermint can make it worse because that same muscle-relaxing effect applies to the valve between your stomach and esophagus.
Chamomile Tea: Worth Being Cautious
Chamomile is a popular choice for calming an upset stomach, but the safety picture during pregnancy is more complicated than many people realize. Two studies have raised concerns. One found higher rates of miscarriage (21.6%) and preterm labor among women who used chamomile during pregnancy. A second study of 630 women found a statistically significant increased risk of preterm birth and low birth weight among the 225 chamomile users.
A case report also documented two pregnant women whose babies developed premature constriction of a key fetal blood vessel after the mothers drank chamomile tea. While these are observational findings and don’t prove chamomile caused the problems, researchers have concluded that chamomile products consumed during pregnancy may carry risks including toxic contaminants and adverse outcomes for both mother and baby. Given that ginger and peppermint have better safety profiles and stronger evidence for nausea relief, chamomile is not the best pick during pregnancy.
Red Raspberry Leaf Tea: Timing Matters
Red raspberry leaf tea is one of the most commonly used herbal teas in pregnancy, but it’s not really a nausea remedy. It’s traditionally used to tone the uterus in preparation for labor, and most women who use it start between 30 and 34 weeks. The clinical evidence for its benefits is thin. Human studies have not shown clear harm, but they haven’t shown definitive benefits either. One study found a small reduction in the length of labor’s second stage, though it wasn’t statistically significant.
One case worth noting: a woman at 32 weeks with gestational diabetes developed dangerously low blood sugar after drinking raspberry leaf tea for just three days, suggesting potential interactions with blood sugar management. If you’re looking specifically for nausea relief in early pregnancy, raspberry leaf tea isn’t the right tool for the job.
Caffeine and Tea During Pregnancy
If you’re switching from caffeinated teas like black or green tea to herbal options, you’re already making a smart move for nausea management, since caffeine can aggravate an unsettled stomach. But caffeinated tea doesn’t need to disappear entirely. The American College of Obstetricians and Gynecologists advises keeping caffeine under 200 mg per day during pregnancy. The World Health Organization sets a slightly higher ceiling at 300 mg. Most guidelines converge in the 200 to 300 mg range, though consumption above 200 mg per day is consistently associated with increased risks.
A standard cup of black tea contains roughly 47 mg of caffeine, and green tea about 28 mg. So even two cups of black tea per day leave you well under the limit. Herbal teas like ginger and peppermint are naturally caffeine-free, making them an easy choice if you want to avoid the math entirely.
Getting the Most Relief From Your Tea
Nausea during pregnancy tends to be worst on an empty stomach, so sipping ginger or peppermint tea first thing in the morning, even before getting out of bed, can help. Keep a thermos on your nightstand or prepare a cold batch the night before. Small, frequent sips generally work better than drinking a full cup quickly, because a large volume of liquid hitting the stomach at once can trigger nausea on its own.
Temperature preferences vary and can change week to week. Some women find cold ginger tea easier to tolerate in the first trimester, while others prefer it warm. Experiment with both. Adding a squeeze of lemon can enhance the anti-nausea effect since citrus scent alone has shown some benefit for pregnancy nausea.
If tea alone isn’t enough, combining ginger tea with a vitamin B6 supplement is a reasonable next step, since the two work through different mechanisms and B6 is commonly recommended by obstetricians as a first-line treatment. Ginger and B6 have comparable effectiveness individually, and using both gives you two angles of attack on the same symptom.