![]() ![]() ![]() Moreover, in rare cases, eucalyptus tea may cause nausea, vomiting, or diarrhea. Teas that may increase the risk of birth defects include ( 12): Teas that may stimulate or increase menstrual bleeding include ( 12, 16, 17): Teas that may increase your risk of miscarriage or preterm labor include ( 11, 12, 13, 14, 15): However, they may contain other compounds considered unsafe during pregnancy, which may result in risky side effects. Herbal teas are made from dried fruits, flowers, spices, or herbs and therefore contain no caffeine. Although they’re generally safe, women may benefit from limiting their daily intake of these caffeinated teas during pregnancy.Ĭertain herbal teas may have risky side effects summaryīlack, green, matcha, oolong, white, and chai teas contain caffeine, a stimulant that should be limited during pregnancy. However, their intake may need to be limited to avoid consuming too much caffeine per day ( 10, 11). For instance, research suggests that this small proportion of women may have a 2.4 times higher risk of miscarriage when consuming 100–300 mg of caffeine per day ( 8).Ĭaffeinated teas contain less caffeine than coffee and are generally considered safe to drink during pregnancy. However, some women’s genetics may make them more sensitive to the ill effects of caffeine. These risks appear minimal when pregnant women limit their caffeine intake to a maximum of 300 mg per day ( 8). High caffeine intake during pregnancy may also increase the risk of miscarriage or stillbirth ( 7, 8, 9). ![]() Research suggests that infants exposed to too much caffeine during pregnancy may have a higher risk of being born preterm or with a low birth weight or birth defects. As such, infants are more likely to experience side effects from amounts of caffeine that would otherwise be considered safe for adults. They each provide approximately the following amount of caffeine per cup (240 mL) ( 2, 3, 4, 5, 6):Ĭaffeine can easily cross the placenta, and your baby’s immature liver has difficulty breaking it down. They contain caffeine - a natural stimulant that should be limited during pregnancy. More detailed information about dietary supplements is available elsewhere on the LactMed Web site.Black, green, white, matcha, chai, and oolong teas are all sourced from the leaves of the Camellia sinensis plant. ![]() Because of the above issues, clinical testing results on one product may not be applicable to other products. A manufacturer may contract with an independent organization to verify the quality of a product or its ingredients, but that does not certify the safety or effectiveness of a product. Dietary supplements may contain multiple ingredients, and differences are often found between labeled and actual ingredients or their amounts. Manufacturers are responsible to ensure the safety, but do not need to prove the safety and effectiveness of dietary supplements before they are marketed. Because there is no published experience with valerian during breastfeeding, an alternate therapy may be preferred, especially while nursing a newborn or preterm infant.ĭietary supplements do not require extensive pre-marketing approval from the U.S. Valerian is often not recommended during lactation because of the theoretical concerns over its valepotriates and baldrinals which have been shown to be cytotoxic and mutagenic in vitro. Valerian is "generally recognized as safe" (GRAS) for use in food by the U.S. In general, valerian is well tolerated, with side effects such as dizziness, hangover or headache reported occasionally. No data exist on the safety and efficacy of valerian in nursing mothers or infants. Valerian has no specific uses in nursing mothers, but is most commonly used to treat anxiety and sleep disturbances, and occasionally for self-treatment of postpartum blues or depression. Preparations are sometimes standardized on valerenic acid content. Valerian ( Valeriana officinalis) root contains mono- and sesquiterpenes, and iridoid triesters (valepotriates). ![]()
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