Uses liver tonic detox eg hangovers fat metabolism psoriasisdescription milk thistle is a large plant with glossy green spiky leaves bearing conspicuous white veins the flowers are large and purple milk thistle seeds have a long history of medicinal use it was previously used for its bitter properties but more recently it has been recognised as an excellent remedy for liver complaintshow it works the main constituent of milk thistle appears to be the substance known as silymarin this ha