Vitamin B12 plays an important role in the functioning of the brain and nervous system. It is required for formation of red blood cells. A lack of B12 can lead to anemia (not having enough red blood cells), causing you to feel tired and weak.
Vitamin D shots are recommended for individuals with a known deficiency or insufficiency and those at risk for vitamin D deficiency. Commonly those are individuals who work indoors, work nights, or lack a balanced diet.
Biotin Injections for Healthy Hair, Strong Nails and Glowing Skin