I'm suffering from panic?anxiety disorder. I went to the clinic and the doctor gave me Dimenhydrinate (Gravol 50mg) and asked me to eat them 1 tablet 3 times a day but I don't like eating them because they give me bad diarrhea. What are the side effects of Dimenhydrinate? And if I stop eating it in a sudden (not gradually) what would happen?

The doctor also h=gave Vitamin B complex and asked me to eat 1 tablet a day. I'd like to know the same thing. What are the side effects of Vitamin B complex? And if I stop eating it in a sudden (not gradually) what would happen?

Will these medicine help reduce the panic attacks that I've been having?