St. John’s wort is the common name for Hypericum perforatum, a yellow flower with a long and rich history. It was originally harvested for the feast of St. John the Baptist. The word ‘wort ...

Q. What is St. John’s Wort? A. St. John’s Wort – also known as hypericum herb, klamath weed or goat weed – is a plant with yellow flowers that are used to make teas and tablets.

St John's wort is known to have an effect on certain liver enzymes which break down drugs. The plant derivative can act as an enzyme inducer—increasing the clearance of hormonal contraceptives .