Horsetail extract is a plant extract from the Equisetum arvense (field horsetail or common horsetail) herb. It is a perennial plant that has been used for hundreds of years to help treat conditions such as fluid retention, UTIs, kidney and bladder stones, hair loss, weak bones and brittle fingernails, amongst other things.
Horsetail extract is often used in multivitamin health supplements, as part of a compound that works to improve overall health and boost the immune system.
