My girlfriend is 19 years old and is anemic so she takes iron supplements but that?s the only medication she has. Whenever she drinks a decent amount she instantly ?blacks out? and almost every time repeatedly passes out for a few seconds at a time. She?ll pass out, wake up all panicked then be ok then pass out again over and over (like 20-30 times in one night). I know this can?t be good and just wanted to get some more info as to why this is happening (as it seems very unusual to pass out many times for a short amount of time) and if doing this is dangerous for her. Any information you could provide is appreciated. Thank you!