Milk Thistle extract is derived from the milk thistle plant, also known as Silybum marianum. It is native to Europe and was taken to North America by early colonists. The active ingredients in milk thistle are a group of plant compounds referred to collectively as silymarin. These are known to have antioxidant, antiviral and anti-inflammatory properties. Milk thistle has been used in traditional medicine for centuries, as it has been shown to provide numerous benefits including helping to protect the liver from toxins and keep it healthy, aiding digestion, stimulating bone mineralisation, helping to prevent age-related decline in brain function and promoting breast milk production.