ON Webmd I Asked Typed In Two Medications Per Say

ON webmd I asked typed in two medications per say and one says they decrease sedation while the other answer was they increase sedation...doesn't make sense? I was asking about Hydroxyzine HCL (which I take to help me sleep as I have psoriasis and I itch ALOT at night) and I have the aches and sore throat so was asking about Alka-Seltzer Plus Night cold formula.