I have never had a manic episode triggered by Klonopin. I'm on .5 mg, 3x daily (though I usually only take it when I need it, doctor said that was fine). However I do know someone who gets manic from any benzo, Klonopin included. Though he's never been diagnosed, he acts *exactly* like someone with Bipolar Disorder. So I think it is possible that the Klonopin made you feel manic.