????? ????? ????? ??? ??????? B-complex ??? ????? ?????? ????? ??? ???? ????? ???? ??????. ????? ??? ???????? ???????? ?????? ?? ??? ??? ??????? ? ??????, ?????? ????? ????? ??????. ???? ??????? ???? ??? ??????? ? ??????? ????? ??????? B ?????? ?? ??????????? ??????? ???? ???? ??????? ???????. ???????? ??? ??? ????? ??????? B ??? B12 ???? ??