pruritus
"Saw the post by DanniBee. The drowsiness appears to be dose dependent. Not sure, (I don't have strong data),  but I think the anti-itch effect happens at a lower level for people that have high drowsiness. Try a low dosage (5 to 10 mg). I know this may be considered a near homeopathic dose, but I and others have seen the anti-itch effect work at these lower doses with people who have particularly high sensitivity to the drowsiness effect. Let me know if it works."