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