Milk thistle is a flowering plant native to the Mediterranean region, known scientifically as Silybum marianum. It features distinctive purple flowers and spiky leaves, often marked with white veins. The seeds of the plant contain a compound called silymarin, which is believed to have antioxidant and anti-inflammatory properties. Traditionally, milk thistle has been used in herbal medicine to support liver health and treat various liver conditions. It is commonly available in supplement form, including capsules and extracts. While many people use it for its potential health benefits, scientific research is ongoing to fully understand its effects.