A pharmaceutical composition comprising (a) at least one protective agent selected from the group consisting of butylated hydroxyanisole, butylated hydroxytoluene, sodium metabisulfite, tert-butylhydroquinone, methylparaben, propylparaben, benzyl alcohol, poly(acrylic acid), hydroxyethyl cellulose, emulsifying wax, PEG-21 stearyl ether, PEG-2 stearyl ether, white petrolatum, myristyl lactate, diisopropyl adipate, cetyl alcohol, cyclomethicone, oleyl alcohol, cholesterol, and polyoxyethylene(4)lauryl ether； and (b) a therapeutically effective amount of an IPC Active Agent or a pharmaceutically acceptable salt or ester thereof.
