Hi, I Was Having Mental Disorder Issues From The Year

hi, i was having mental disorder issues from the year 2009, there has been two attacks and after that the doctor advised me to take sulpitac 100 mg, i continued till march 2015, and suddenly went to another doctor for advice, he changed the medicine to arip 5 mg, i feel arip has a lot more side effect then sulpitac, what should i do , from last 3 months i was taking sulpitac 50 mg