How long does it take for vitamin D 50,000 IU to work? - Quora
Vitamin D-3 50000 IU High-Potency 120 Tablets – Biophix
LifeSource Vitamins-Vitamin D3, 50softgels, 50000 IU, essential for the efficient utilization of calcium by the body, enhance your immunity and inhibit the development of auto immunity
Amazon.com: Nivagen Pharmaceuticals Inc Vitamin D3 50,000 IU Capsule (100)