Parsley seed oil (Petroselinum crispum) is dominated by apiol, a phenylpropanoid ether present at up to 70%, alongside myristicin and beta-phellandrene. Apiol's historical use as an abortifacient reflects its potent uterotonic action; the oil is contraindicated in pregnancy at therapeutic doses. In vitro studies confirm additional broad-spectrum antimicrobial activity, with inhibition against bacterial and fungal pathogens including Candida albicans and Staphylococcus aureus.^[1][2]