Fatty acid derivatives

Method for treatment of a disease or condition related to a neurotransmitter defect or deficiency, or to another central or peripheral nervous sysem defect or deficiency, wherein there is administered to a human or non-human mammal an effective amount of at least one acylate which is the reaction product of (a) a substance which is selected from the group consisting of naturally occurring α-aminocarboxylic acids, neurotransmitters other than such acids, and central or peripheral nervous system pharmacologically active compounds, and containing a functional group including an acylatable hydrogen atom, or a reactive derivative thereof;

• and (b) an essential fatty acid or a reactive derivative thereof, and including the pharmaceutically acceptable salts of such acylates possessing a basic and(or) acidic function, or of a functional derivative of said acylate including the pharmaceutically acceptable salts of such functional derivative possessing a basic and(or) acidic function;
• provided that component (b) excludes Δ-4,7,10,13,16,19-docosahexaenoic acid or a reactive derivative thereof.