D3 5000 with K2 is a highly bioavailable form of Vitamin D3- as cholecalciferol- and vitamin K2. These essential fat-soluble vitamins support ubiquitous roles throughout the body such as supporting stress levels, bone health, skin health, heart health and immune function. Deficiency of Vitamin D has been linked with a host of health issues, viral and bacterial infections as well as increased duration of infections. Vitamin K2 can help improve absorption of Vitamin D. The most relevant research-backed benefits of Vitamin D with K2 supplementation include: Support immune function Support cardiovascular function Support healthy mood and stress levels Support bone and skin tissues