-18%
-51%
Vitamin D supplements usually contain vitamin D3 (cholecalciferol), sometimes with vitamin K2. Strength is shown in IU or micrograms per serving. Check the strength and how often the label says to take it, and do not double up with a multivitamin that already contains vitamin D.
Browse more single vitamins.
Vitamin D: questions
What is the difference between D2 and D3?
D3 (cholecalciferol) is the form most supplements use. D2 comes from plant or fungal sources.