Hydroxyzine Pamoate is a light yellow odorless powder, practically insoluble in water and methanol and freely soluble in dimethylformamide. It is chemically designated as -2-[2-[4--1-piperazinyl]ethoxy]ethanol 4,4 -methylenebis[3-hydroxy-2-naphthoate] and can be structurally represented as follows: Vistaril is the brand name for hydroxyzine...