?Sundown Naturals Quick Dissolve Methylcobalamin B12 is an easy way to get a high-potency source of this essential B Vitamin - simply place this delicious cherry-flavored microlozenge under your tongue for 30 seconds before swallowing. An ideal choice for those who have difficulty swallowing tablets and capsules, these sublingual microlozenges supply you with Vitamin B12 to support nervous system health and energy metabolism.* B12 also supports heart and circulatory health, and helps provide nourishment for the occasional stress of daily living.*