Pabrinex IM (Vitamin B & C Injection) is a preparation containing the water soluble vitamins B and C. Vitamins are substances that are required by the body in very small amounts to maintain normal body functions. Vitamin B is involved in many biological activities, such as the development and maintenance of the nervous system (brain and nerves) and the formation of blood cells. Vitamin C is an antioxidant and is responsible for maintaining healthy cell structure and producing an important protein, known as collagen, that is found in the skin, bone, cartilage and tendons. Vitamins B and C can not be produced by the body, and are therefore obtained soley from the diet. Vitamin B is commonly found in liver, eggs and milk and vitamin C in citrus fruits such as oranges and in certain vegetables. Vitamin B and C deficiencies can arise from poor diet, particularly in alcoholism or psychiatric states, or in conditions where the body can not effectively absorb nutrients from the gut (malabsorption) and also due to depletion caused by regular kidney (renal) haemodialysis. This can lead to vitamin deficiency causing severe conditions of the nervous system and blood disorders which can be life threatening. Hence pabrinex is given by injection over a short period of time, to rapidly replace depleted vitamins. There are two forms of pabrinex injection:- one is soley for injecting into the veins (intravenous use) and the other for injecting into the muscle (intramuscular use).