Ergocalciferol

DESCRIPTION ERGOCALCIFEROL CAPSULES, USP, is a synthetic calcium regulator for oral administration.​​​‍​​‍​​​​‍​​‍‍ Ergocalciferol is a white, colorless crystal, insoluble in water, soluble in organic solvents, and slightly soluble in vegetable oils. It is affected by air and by light. Ergosterol or provitamin D 2 is found in plants and yeast and has no antirachitic activity. There are more than 10 substances belonging to a group of steroid compounds, classified as having vitamin D or antirachitic activity. One USP Unit of vitamin D 2 is equivalent to one International Unit (IU), and 1 mcg of vitamin D 2 is equal to 40 IU. Each softgel, for oral administration, contains Ergocalciferol, USP 1,250 mcg (equivalent to 50,000 USP units of Vitamin D), in an edible vegetable oil. Ergocalciferol, also called vitamin D 2 , is 9,10-secoergosta-5,7,10(19),22-tetraen-3-ol,(3 β ,5 Z ,7 E ,22 E )-; (C 28 H 44 O) with a molecular weight of 396.65, and has the following structural formula: Inactive Ingredients : Refined soybean oil, gelatin, glycerin, purified water, D&C Yellow #10, and FD&C Blue #1.