Patent ID: 8841307

Claim:
A pharmaceutical composition formulated as a sterile powder for reconstitution for parenteral administration comprising a pharmaceutically-acceptable carrier and a therapeutically effective dose of a diketopiperazine having the formula: wherein: R 1 is —CH 2 COR 3 , or —CH 2 CH 2 COR 3 ; R 2 is the side chain of an amino acid selected from the group consisting of alanine, serine, threonine, aspartic acid, asparagine, glutamic acid, glutamine, hydroxylysine,; R 3 is —OH, —NH 2 , —OR 4 , —NHR 4 , or —NR 4 R 4 ; and each R 4 is independently an alkyl, aryl, alkylaryl, or arylalkyl, or a physiologically-acceptable salt thereof wherein the pharmaceutically-acceptable carrier comprises an excipient selected from the group consisting of an antioxidant, a buffer, a solute which will render the formulation isotonic with the blood of a mammalian recipient, a suspending agent, and a thickening agent.