David Kirsch's proprietary herbal blend helps reduce fatigue, stress and depression with its one-of-a-kind combination of: Vitamin B12: Over 40 times your RDA increases energy levels. l-tyrosine: its brain-enhancing qualities help with stress and mood disorders. Vinpocetine: improves blood flow to the brain and mental acuity. Panax ginseng: increases mental performance. Natural energy boosters: ginger and cinnamon. In addition to increasing alertness and mental function, Afternoon Energy contains thermogenic ingredients to improve energy metabolism and glucose utilisation. Space NK loves this supplement for delivering a healthy lift to body, mind and spirit.