Vitamin D3k2 is a combination of vitamin D3 and menaquinone (vitamin K2, trans-MK7) that contributes to bone health thanks to its content of vitamin D3 and vitamin K2 that favor the absorption and normal use of calcium and phosphorus and to the maintenance of bones in normal conditions. Contributes to the normal function of the immune system. Vitamin D is both a vitamin and a hormone that acts as a micronutrient, the intake of which is essential for the metabolism of the human body. This vitamin is mainly synthesized in the skin after sun exposure but it is also ingested in the diet and absorbed by the intestinal mucosa. Vitamin K2 acts in synergy on many occasions beneficial to the bones. It is recommended in Shock dose: 4,000 IU (5 drops) a day for 10 weeks. At doses> 4,000 IU per day of vitamin D, supplements should add vitamin K2 (20 µg for every 800 IU of vitamin D3) for best results. Maintenance dose: Adults and children> 1 year: 800 IU (1 drop) per day. Children <1 year: 800 IU (1 drop) every 2 days. Consider the body's own inflammation processes and also the body's synthesis of vitamin D with sun exposure. Serum vitamin D levels should be reassessed 10 weeks after starting supplementation. Depending on whether the levels are too high or too low, the dosage can be adapted.