Horsetail Side Effects, Interactions and Warnings Horsetail Side Effects, Interactions and Warnings Seborrhoeic dermatitis induced by nicotine of horsetails. – Contact Dermatitis 1985 Sep;13(3):201-2 — Seborrhoeic dermatitis induced by nicotine of horsetails (Equisetum arvense L.). — Sudan BJ. Herbal Side Effects, Interactions and Warnings Supplement Side Effects, Interactions and Warnings Prescription Drug Interactions and Warnings Prescription Information Resources Disease Information last update: March 2014
