Purity’s Advanced D™ combines a potent 5,000 IU of Vitamin D3 with essential co-factors — Vitamin K2, Zinc, Magnesium, Quercetin, and Boron — to deliver optimal absorption, activation, and total-body benefits.* This next-generation D3 formula supports a strong immune system, healthy bones and muscles, heart and brain function, and balanced mood and vitality.*