High-dose vitamin B12: Provides 5000 mcg of vitamin B12 in bioactive form for optimal energy and vitality Double B12 power: combination of methylcobalamin and adenosylcobalamin supports energy metabolism and the nervous system Fast absorption: Sublingual lozenges allow direct absorption through the oral mucosa for maximum effect Practical application: Ideal for on the go – simply place under the tongue and let it dissolve Life Extension Quality: Developed to the highest standards of purity and potency – supports your health effectively and safely