B12-ND‚™, Premier. High Potency, Fermented Vitamin B12 (Preferred Form). Dietary Supplement, 2 fl oz (54 mL). “PRL’s signature FermExcel-100 line is an industry first!” Premier Research Labs’ B12-ND contains fully active co-enzymes of vitamin B12 that are rich in the desirable “blood circulating forms” of vitamin B-12 , namely, methylcobalamin, adenosylcobalamin and hydroxycobalamin.