I used to get these and take more as it would sedate me stop my anxiety im sure it was these are they meant to be sedating I know it's.a anti histamine but 4mg knocked me out. Does it potenriate opiates like hydroxyzine does and how coke these not in position anymore my doctor reckons 100mg hydroxyzine a day is extremely sedating I don't find it to be lol and he not dumb I asked a doff doctor for these as I do compare 75mg to be as effective as 5mg diazepam anxiety wise and I know there was a study with bromazepam or sometiing