My Daughter Who Is 46 Has Been Having Bouts Of

my daughter who is 46 has been having bouts of weakness with sweating and is unable to stand at this time. she also has these episodes in the middle of the night. she has been checked by a heart doctor and he says she has a slight murmur. she has had 11 of these in about 17 days lately. she was just told she has very low vitamin D