I'm used to taking the green 1.0 clonzapam and they work within 20 minutes and work well! My doctor has now prescribed me these hydroxyzine 25 mg. To take and I take amitryptaline 150 mg. But are these ok to take together? And are the hydroxyzine a fast acting like Xanax and clonzapam? I think the clonzapam works better! Someone please let me KNO about this because I have bad severe panic attacks almost EVERYDAY and I just want to know about these medicines and if they help me???