The present invention is directed to a pharmaceutical composition comprising a pharmaceutically acceptable carrier and ω-(methylsulfonyl)alkylamine or ω-(methylsulfonyl)alkylamide. The present invention is also directed to a method for treating inflammation, inflammatory-related disorders, or pain, by administering ω-(methylsulfonyl)alkylamine or ω-(methylsulfonyl)alkylamide, or a pharmaceutically acceptable salt or solvate thereof to a subject in need thereof.