Vegan D3 offers 600 I.U. of 100% natural and vegan Vitamin D3 per serving. Extracted from a plant source called a Lichen the only completely natural and vegan from of D3 available today. Vitamin D3 is more potent than Vitamin D2 (Ergocalciferol). Vitamind D3 is essential towards building & maintaining healthy bones plays an important role in brain health heart protection muscle strength and autoimmune disorders. 30 servings per bottle. Suitable for Jains vegans and vegetarians; Registered by the Vegan Society - UK