I already asked in another thread for possible explanations for getting brainfog from all antibiotics (from some also more asthma-like, neurological and fatigue problems). I am starting a new thread now because in the meantime i discovered its not nesessarily only antibiotics I react to that strong. Its also most other meds, even "natural" ones! Also iron and st. johns wort made my fatigue, brainfog, breathing problems, hot flashes and heavy arms extremely worse. it both cases it was definitely a reaction to those meds. it even occured right after taking it. which i think is strange cos usually bad reactions to meds only happen after while. my feeling of inflammation in the gut and blood on the toilet paper (diagnosis of anal fissure) got also worse on probiotics (not better as my md thought). other substances as fish oil or vitC dont seem to worsen my symptoms (at least i think they dont do). im confused. i know many cfs-sufferers react strong to meds. but maybe my whole disease is just a reaction to certain things? how can it be to react so similar to substances which are so different?