Like "oooo...well...250mg is below what they typically even start someone on...they start at about 500mg and can rise up over 2000mg... Severe abdominal pain and vomiting is not a good sign...If it persists I def would not be ok with it...I'd read the little info sheet that comes with your Rx to see if that fits you... One thing about Dr's is they aren't always good about changing something when they should! :D I sure hope you feel better!"