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