Vitamin D3 Dry
It means they are water soluable, not in oil. They usually come a powder in a capsule. The best ones are by BioTech and are available at vitalady.com - D3-50 or D3-5 = either 50,000 units or 5,000 units. The 50,000 units are the same dosage as the prescription ones except in the form of D that we can absorb.