DOCTOR'S BEST FULLY ACTIVE B-12 DIETARY SUPPLEMENT CONTAINS METHYLCOBALAMIN; A HIGHLY ABSORBABLE FORM OF VITAMIN B-12; WHICH SUPPORTS A HEALTHY NERVOUS SYSTEM AND ASSISTS THE BODY WITH PRODUCING RED BLOOD CELLS. YOU MUST OBTAIN B-12 THROUGH THE DIET SINCE THE BODY IS UNABLE TO CREATE IT; AND SOME PEOPLE REQUIRE SUPPLEMENTATION DUE TO INHERITED FACTORS OR AN INADEQUATE DIET TO PREVENT A DEFICIENCY. THIS BOTTLE CONTAINS 60 CAPSULES; EACH WITH 1500 MCG. OF METHYLCOBALAMIN.