Horsetail

Equisetum arvense

Family: Equisetaceae Evidence: C teacapsuletinctureextract

A silica-rich herb used traditionally for hair, skin, nail, and bone health, as well as urinary support.

Safety Profile

PregnancyUnsafe
BreastfeedingUnsafe
PediatricNot Recommended

Contraindications

Contains thiaminase (destroys thiamine/vitamin B1). Kidney disease. Nicotine sensitivity.

Interactions

May interact with diuretics, lithium, diabetes medications, and digoxin. Depletes thiamine.

Side Effects

Thiamine deficiency with long-term use. GI upset. Nicotine-like toxicity with some species.

Kidney: Diuretic effects. Contains silica — avoid with kidney disease.
Allergy: Nicotine sensitivity (contains trace amounts).
This information is for educational purposes only. It is not medical advice. Consult a qualified healthcare provider before using any herbal product.