my daughter was prescribed ciplar la 40 containing propranalol for migraine treatment, she seems to have side effect like , stomach cramps and bloody stools , on checking up with doctor he says the drug will not have such side effect ,advised to go visit a general surgeon.she used some other medicine for migraine prescribed by another doctor who also refused to acknowledge the side effect of nasuea caused by it. I wonder are the side effects well documents , do doctors will have the thorough knowledge of the side effects ? on web search I am finding some effects where as doctor is in denial mode ! we are unable to make out the truth , pls suggest what to do under these circumstances