04/28/2026
https://www.stagesoflifemedicalinstitute.com/post/use-vitamin-d3-avoid-vitamin-d2
Vitamin D supplements are not interchangeable, and the distinction between vitamin D₂ (ergocalciferol) and vitamin D₃ (cholecalciferol) has real clinical consequences. Although both forms can raise measured vitamin D levels, vitamin D₃ is more potent, more stable, longer lasting, and biologica...