Myths and Risks of 'Natural' Pregnancy Supplements

Often used for menopause symptoms, this herb can stimulate uterine contractions and potentially induce labor prematurely. Pregnant women should avoid it as it may increase the risk of miscarriage or bleeding complications.

Traditionally used to facilitate labor, blue cohosh acts as an emmenagogue and can cause severe uterine contractions when taken during early pregnancy. It poses significant risks of birth defects if consumed in the first trimester.

Known as Chinese dong quai, this herb increases blood flow to the uterus and pelvis, which can stimulate menstrual flow or trigger contractions. It is generally contraindicated during pregnancy due to the risk of miscarriage.

A herbal blend promoted for immune support, Essiac tea contains burdock root and sheep sorrel which may stimulate uterine activity. Its safety profile during pregnancy is unproven, and healthcare providers typically advise against its use.

Commonly taken for migraine prevention, feverfew can inhibit platelet aggregation and increase bleeding risks during delivery. It may also stimulate uterine contractions, making it unsafe for consumption throughout pregnancy.

This potent herbal remedy has historically been used to induce abortion, posing extreme toxicity and risk of liver failure. Even small doses can cause severe internal bleeding and organ damage, making it absolutely dangerous for pregnant women.

While often recommended in late pregnancy to tone the uterus, taking raspberry leaf early on may trigger premature contractions. It should only be used under strict medical supervision and typically reserved for the third trimester.

Often used for prostate health, saw palmetto affects hormone levels and may interfere with fetal sexual development. There is insufficient data to confirm its safety, so it is best avoided during pregnancy to prevent hormonal disruption.

Used for depression, this herb can induce liver enzymes that metabolize other medications, leading to unpredictable drug interactions. It is associated with potential birth defects and should not be taken without a doctor's guidance.

Frequently used as a sleep aid, valerian root may cause drowsiness and potential birth defects due to lack of safety studies. It is generally advised to avoid sedative herbs during pregnancy to ensure normal fetal development.

This bitter herb contains thujone, which is neurotoxic and can cause seizures, kidney damage, and uterine contractions. It is strictly prohibited during pregnancy due to its high toxicity and potential for causing miscarriage.

Derived from tree bark, yohimbe can raise blood pressure and heart rate, posing risks for pre-eclampsia and fetal distress. Its stimulant effects are unsafe for pregnant women and can lead to serious cardiovascular complications.

While essential in small amounts, excessive preformed vitamin A (retinol) is teratogenic and can cause severe birth defects. Pregnant women must ensure they do not exceed recommended daily allowances through supplements or liver consumption.

Regular consumption of licorice root can increase blood pressure and alter fetal cortisol levels, potentially affecting brain development. Recent studies suggest it may be linked to behavioral issues in children if used excessively during pregnancy.

Often marketed for memory improvement, ginkgo can thin the blood and increase the risk of bleeding during delivery. It is generally recommended to avoid ginkgo during pregnancy to prevent complications with clotting and fetal safety.

While topical aloe is safe, ingested aloe latex contains compounds that can stimulate uterine contractions and cause cramping. Pregnant women should avoid oral forms of aloe supplements to prevent the risk of inducing labor prematurely.

This herb contains berberine, which can cross the placenta and cause kernicterus, a type of brain damage, in newborns. It is particularly dangerous in the last trimester and should be avoided to protect the infant's health.

Used for hormonal balance, chasteberry influences prolactin and other hormone levels, which can disrupt pregnancy maintenance. It is not recommended during pregnancy as it may interfere with normal hormonal fluctuations required for gestation.

Often taken to soften the cervix near term, evening primrose oil may stimulate uterine contractions if used too early. It should be avoided until explicitly advised by a healthcare provider, typically only in the very late stages of pregnancy.

An anti-inflammatory herb that may stimulate the immune system and cause uterine contractions, posing a risk of miscarriage. Its effects on the developing fetus are unknown, so medical guidelines advise complete avoidance during pregnancy.