Note: Do not tilt your head back. This may cause blood to run down the back of your throat, and you may swallow it. Use your thumb and forefinger to firmly pinch the soft part of your nose shut. The nose consists of a hard, bony part and a softer part made of cartilage.
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). This difference between the two groups is very important. It determines how each vitamin acts within the body. The fat soluble vitamins are soluble in lipids (fats).
There are eight water-soluble vitamins known as B-complex vitamins: thiamin (vitamin B1), riboflavin (vitamin B2), vitamin B6, vitamin B12, folate, biotin, niacin and pantothenic acid. Vitamin B-complex vitamins are needed for healthy skin, good vision, a healthy nervous system and the formation of red blood cells.ater soluble vitamins, which are highly soluble, require daily replenishment in your body. Fat soluble vitamins, which are also essential for your health and stored in your liver, do not need to be replaced every day. The Importance of Fat Soluble Vitamin A.