VITAMIN D3 RESIN IN OIL is clear to almost clear, pale brown to brown viscous solution. Available in strength 1 MIU/g, 2 MIU/g, 4 MIU/g, 5 MIU/g, 10 MIU/g, and 15 MIU/g. Store in cool, air tight, well fitted container, protected from light. Once open, use immediately.