A change in vitamin D prescriptions (with a conversion table!)

In Epic, vitamin D formulations will no longer be prescribed in international units (IU) and will now transition to micrograms (mcg) as recommended by the FDA.

The conversion ratio for both ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3) is 1 IU to 0.025mcg. Here is a summary of commonly prescribed doses: