I started off on 10mg then went up to 20mg a fortnight later then doubled it again & have been taking 40mg for couple of years. I was lucky & never had any nasty side effects. My dr explained to me they were the least likely drug of this type to upset your stomach. Thinking back I took mine early evening at first cos they made me a bit dopey. Your body should have become accustomed to the drug before they up your dose therefore you shouldnt get side effects again.