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 its commonly dried and ground to be used as a spice in cooking the bright yellow colour of turmeric is caused by the plants main active ingredient curcumin turmeric has traditionally been used as a herbal re