Which herb should be avoided in pregnancy due to potential risks?

• A. Eucalyptus globulus
• B. Foeniculum vulgare
• C. Euphrasia officinalis
• D. Eupatorium purpureum

Answer: (D)

Stimulation of uterine contractions is a key reason to avoid certain herbs in pregnancy. Eupatorium purpureum is known to be emmenagogue, meaning it can increase uterine tone and provoke contractions. That potential to induce labor or miscarriage makes it unsafe during pregnancy, so it’s the herb to avoid. The other herbs listed don’t carry the same established risk of uterine stimulation in typical use: eucalyptus is mainly used for respiratory issues (often by inhalation or topical routes) and isn’t employed for uterine effects; fennel has estrogenic components but isn’t a reliable abortifacient in usual doses; eyebright is a gentler remedy not associated with uterine stimulation.