: Always choose Vitamin D3 (cholecalciferol) over D2, as it is more effective at raising blood levels.
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: This is frequently cited as the supplement. It pairs 5,000 IU of D3 with Vitamin K2 (MK-7) to optimize calcium absorption into bones rather than soft tissues. It is vegan-friendly and third-party tested. Sports Research Vitamin D3 : Always choose Vitamin D3 (cholecalciferol) over D2,