Vitamin injections enable direct delivery of key nutritional supplements including vitamins or antioxidants directly into the body through the veins, where they can be rapidly absorbed and delivered through the venous system. These injections have become popular in recent years, especially among healthy people who are concerned to ensure that they are getting adequate levels of vitamins, claiming that they feel better as a result of regular injections, stating improvements in energy levels, weight, sleep, mood, and hair loss.