Why does this have Vitamin K in it instead of just Vitamin D?

Vitamin D increases calcium absorption, but Vitamin K is required to direct that calcium into your bones. Without Vitamin K, there is a risk that calcium could deposit in your arteries or kidneys. This combination ensures that the calcium you absorb is used safely and effectively by your skeletal system.

About Vitamin D Supreme Guide: Benefits for Bone Health and Longevity

This answer is drawn from the full physician-reviewed guide to Vitamin D Supreme Guide: Benefits for Bone Health and Longevity on the GOAL.MD Vitamin Shop learning hub. Read the full guide for mechanism of action, evidence, dosing, safety, and interactions.

Medically reviewed by Dr. Michael Mimlitz, MD (NPI 1508891870), Chief Physician of GOAL.MD. Physician-supervised telehealth. More at goal.md/answers.