B12 is a vital B vitamin necessary to help form and maintain healthy red blood cells. Unfortunately our bodies need but cannot produce B12, therefore we must obtain it from diet, supplements, or injection. Intramuscular injections of B12 (cobalamin) allow for a more steady sustained release as opposed to taking a daily supplement. Most patients experience increases in energy, mental clarity, and metabolism. Patients feel the effects of the injection for a few days up to one week after. However, the benefits are far longer lasting with regular B12 injections. B12 helps prevent anemia, birth defects, and may reduce osteoporosis, macular degeneration of the eyes, depression, low energy/low mood. Adequate levels of B12 can also help maintain healthy hair, skin, and nails.