Role of Vitamin D in Osteoarthritis: Molecular, Cellular, and Clinical Perspectives

Table 1

Names and abbreviations of the forms of vitamin D₃.

Name	Alternative name	Abbreviation	Activity
Vitamin D3	Cholecalciferol	—	Inactive
25-Hydroxyvitamin D3	Calcidiol	25(OH)D3	Active
1,25-Dihydroxyvitamin D3	Calcitriol	1,25(OH)2D3	Most active