Balanced, Hypoallergenic B-Complex A balanced, hypoallergenic B-complex featuring the active forms of vitamins B2, B6, B12 and Quatrefolic® brand of (6S)-5-methyltetrahydrofolate. Active B-Complex is a balanced, hypoallergenic B-complex formula featuring the active forms of vitamins B2, B6, and B12. It also contains Quatrefolic, the stabi