What Are Myvitamins Curcumin & Vitamin D3 Capsules? Myvitamins Curcumin & Vitamin D3 Capsules are a uniquely formulated blend to support your wellbeing from within. We've added curcumin, the active compound in turmeric, and vitamin D3, which helps to support the health of your bones and muscles. 1  Vitamin D3