High strength Curcumin supplement Greater Bioavailability than standard Curcumin Combined with Vitamin D3 Curcumin is the active ingredient of the spice Turmeric. Native to South East Asia, Turmeric is a relative of the Ginger plant. Due to its distinctive colour and flavour, it's commonly dried and ground to be used as a spice in cooking. The bright yellow colour of Turmeric is caused by the plant's main active ingredient, Curcumin. Turmeric has traditionally been used as a herbal remedy to help ease symptoms of various ailments.