Therapeutic Group: Vitamins and Minerals Presentation Colitrol injection: Each 1 ml ampoule contains 1 mcg of Calcitriol BP (Vitamin D3). Colitrol capsule: Each capsule contains 0.25 mcg of Calcitriol BP (Vitamin D3). Description Calcitriol is one of the most important active metabolites of vitamin D3. It is normally formed in the kidney from its precursor, […]