Vitamin D3 5000 provides superior vitamin D to support the immune system and aid bone health. Vitamin D is manufactured in response to the skin's exposure to sunlight and is essential to the body's absorption of calcium. Natural vitamin D3 is four times more potent than synthetic vitamin D2.

Evidence suggests that taking vitamin D may significantly benefit bone health when combined with calcium and may enable immune functions and phagocytosis, a process for removing undesired substances at the cellular level.

Pettersen, J. A. (2016). Vitamin D and executive functioning: are higher levels better?. journal of clinical and experimental neuropsychology, 38(4), 467-477.

Djukic, M., Onken, M. L., Schütze, S., Redlich, S., Götz, A., Hanisch, U. K., ... & Nau, R. (2014). Vitamin D deficiency reduces the immune response, phagocytosis rate, and intracellular killing rate of microglial cells. Infection and immunity, 82(6), 2585-2594.