Range of B-vitamins support critical metabolic function and help support energy production. They also work with synergy and depend on each other for optimal function. NUTRILITE Natural B with yeast is a nutritious formula of seven essential B-vitamins (B1, B2, B3, B5, B6, folic acid and B12), plus Inositol and PABA (para-amino-benzoic-acid) derived from naturally cultivated yeast. This specially cultured, deactivated yeast provides one of the richest natural sources of vitamin B. One tablets of NUTRILITE Natural B with yeast help fulfill the daily requirement for B-complex vitamins along with regular diet.