Composition containing palmitoylethanolamide ultramicrosize

A pharmaceutical composition for human or veterinary use containing a therapeutically effective amount of palmitoylethanolamide in ultramicrosize, in which more than 90% by weight of palmitoylethanolamide has particle sizes of less than 6 microns, characterized particles that said palmitoylethanolamide is in combination with an antioxidant compound is thioctic acid together with pharmaceutically acceptable excipients.