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Avoid If Pregnant

Herb List and Information

Certain herbs and natural ingredients, while beneficial in some contexts, can pose risks during pregnancy due to their potential to induce uterine contractions, affect hormonal balance, or cause other adverse effects. By clearly identifying products containing these ingredients, we aim to bridge the gap between natural wellness and responsible consumption.

This label is more than just a warning—it's part of our mission to uphold ethical standards and prioritize the health and well-being of every consumer. Below, you’ll find a detailed list of herbs that may fall under this category and why we believe labeling these products is an essential step toward creating a safer marketplace. Below are herbs you will want to avoid during pregnancy (unless otherwise recommended by a practitioner).

Herbs to Avoid if Pregnant

Black Cohosh

May stimulate uterine contractions, potentially leading to preterm labor.

Dong Quai

May increase the risk of uterine bleeding and contractions due to its anticoagulant properties.

Mugwort

Contains thujone, which may stimulate menstruation and uterine activity.

Rue

Contains rutin, which may induce uterine contractions and cause severe toxicity.

Tansy

Contains thujone, which may stimulate uterine contractions and cause toxicity.

Licorice Root

Contains glycyrrhizin, which can raise blood pressure, lower potassium, and affect hormonal balance, posing risks to the fetus.

Fenugreek

Fenugreek is not safe for use during pregnancy in amounts greater than those found in food; its use has been linked to increased risks of birth defects in both animals and people.

Vitex (Chasteberry)

May alter hormonal balance, potentially impacting pregnancy maintenance.

Borage

Contains pyrrolizidine alkaloids, which may harm the liver and the fetus. If you are pregnant or breastfeeding: Borage oil may cause birth defects, premature labor, or a blood disorder in infants known as blue baby syndrome.

Ginseng

Current evidence suggests that Panax ginseng is unlikely to cause harm in typical human consumption during pregnancy. However, due to uncertainty around estrogenic effects and animal evidence of teratogenicity at high doses, it is recommended to use with caution. Avoid products with unknown purity or adulterants, and consult with a healthcare provider before use.

Saw Palmetto

May interfere with male fetal development by blocking 5-alpha-reductase, an enzyme critical for male hormone production.

Blue Cohosh

Maternal ingestion has been associated with a range of fetal and neonatal side effects and adverse outcomes, including fetal tachycardia, increased meconium, profound neonatal congestive heart failure, and perinatal stroke.

Pennyroyal

It is likely unsafe to take pennyroyal by mouth or apply it to your skin when pregnant. There is some evidence that pennyroyal oil can cause abortions by causing the uterus to contract. But the dose needed in order to cause an abortion could kill the parent or cause life-long kidney and liver damage. Avoid use.

Parsley

In large amounts, it contains apiole and myristicin, which may stimulate uterine contractions.

Sage

It may be unsafe to use sage during pregnancy because its constituent thujone may have harmful effects.

Yarrow

May increase uterine tone and stimulate contractions.

Ashwagandha

High doses may stimulate uterine contractions and cause miscarriage.

Evening Primrose Oil

May soften the cervix and possibly interfere with labor progression (e.g., prolonged rupture of membranes).

Comfrey

Contains pyrrolizidine alkaloids, which can cause liver toxicity and harm fetal development. Should not be used orally or on open wounds.

Coltsfoot

Contains pyrrolizidine alkaloids, which may harm the liver and the fetus.

Angelica

May stimulate uterine contractions and increase bleeding risk.

Wormwood

Contains thujone, which may stimulate uterine activity and cause toxicity.

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