Features cutting edge hydroxycobalamin for better bioavailability Sweetened with stevia and xylitol Gluten Free, Vegetarian Per GMP guidelines set forth by the FDA, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are formulated for 12 months. Per GMP guidelines set forth by the FDA, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are formulated for 12 months. Swanson Ultra Sublingual Vitamin B-12 features cutting edge hydroxycobalamin, a form of the vitamin B-12 with excellent bioavailability. Sweetened with dental friendly stevia and xylitol and featuring delicious natural berry flavoring, our sugar free tablets utilize Supplemelts technology to ensure fast, efficient absorption.