B COMPLEX INJECTION is a medicine used in the treatment of vitamin B deficiency. It is an important nutrient which helps the body to perform various functions like maintaining healthy nerve tissue, brain function, and red blood cell production. B COMPLEX INJECTION is generally administered by a healthcare professional. Do not self-administer it at home. You should take it regularly and at the fixed time each day to get the most benefit from it. This medicine may be only part of a complete program of treatment that also includes making changes to your diet and taking other supplements. Learn about the foods you should eat to make sure you get enough vitamin B in your diet