The Vitamin B12 Energy Patch delivers 1600mcg of 100% bioactive methylcobolamin (B12) directly into circulation. Vitamin B12 is a crucial nutrient for normal brain and nervous system function that is involved in the metabolism of every single cell in the human body. It is involved in the creation of the red blood cells responsible for carrying oxygen throughout the body. Humans cannot synthesize Vitamin B12 in the body and must obtain this vital nutrient through external sources. Living Nutritionals B12 Energy Patch contains pure pharmaceutical grade, vegan Methylcobalamin, the most potent bioavailable form of B12. Our state of the art pharmaceutical grade adhesive with time release technology allows the Bioactive B12 to absorb directly into circulation.