Boost B12 is stimulant free and contains the most bio-available form of B12 (methylcobalamin) which is a naturally active form found within human metabolism. Specially formulated to delivery vitamin B12 directly into the mouth. The tiny droplets absorb quickly, providing fast nutrient uptake. Each dosage (4 sprays) delivers 1200?g (micrograms) of vitamin B12 along with 40?g (micrograms) of chromium and 0.5mg of green tea extract.