B Colex Injection is a prescription medicine. It has a combination of vitamins that is prescribed to treat vitamin and other nutritional deficiencies. It ensures the proper growth and functioning of the body. B Colex Injection injection is administered under the supervision of a healthcare professional. You are not advised to self administer this injection. Inform your doctor if you have any known allergy from this medication. You may experience symptoms of injection site reactions such as redness, swelling, and pain. Usually, they go away with time but if these symptoms persist for a longer duration, please consult your doctor. Inform your doctor if you are suffering from any disease or are taking any medicines.