Oral aqueous suspension formulation comprising carbamate compound

A method for treating a central nervous system disease, comprising

• administering to a subject in need thereof an aqueous formulation comprising a carbamate compound of Formula 1, or a pharmaceutically acceptable salt, solvate or hydrate thereof, a pharmaceutically acceptable excipient, and an aqueous carrier:
• wherein,
• R1 and R2 are each independently selected from the group consisting of —H, halo, C1-C8 alkyl, halo-C1-C8 alkyl, C1-C8 thioalkoxy, and C1-C8 alkoxy;
• and
• one of A1 and A2 is CH, and the other is N,
• wherein the pharmaceutically acceptable excipient is poloxamer or smectite clay;
• wherein the aqueous formulation is in the form of a suspension formulation.