Vitamin K is a fat-soluble vitamin. Vitamin K protects us from bleeding excessively due to cuts and wounds or due to internal bleeding. Vitamin K is required for the biosynthesis of some proteins found in plasma, bone and kidneys. Vitamin D is a fat-soluble vitamin. Our bodies produce it when exposed to sunlight.
Vitamin D regulates blood levels of calcium within normal limits.
It aids the intestines in absorption of calcium and phosphorus. Most foods have little or no vitamin D, and few foods are fortified with it. However, our bodies can produce it with exposure to sunlight. Vitamin C is a popular vitamin, which is widely used because of its anti-oxidant effects. Vitamin C helps form the protein collagen, keeps capillary walls and blood vessels firm, aids with the absorption of iron, improves your immune system and several other vital functions.