... 24-hour, non-drowsy or off-brand OTC, which I used, and it worked for me. I tried to taper down for 2 years but couldn't until I took Claritin. I take it Once a day, and I've been mostly itch-free for a month. I took seroquel 200 mg for 8 years for bipolar, and it was very difficult to stop without lots of itching. Good luck.