Use of a 1- (3-chlorophenyl) -3-alkylpiperazine of formula (I), in racemic (R,S) form or in the form of the (S) enantiomer, in which R is a linear orbranched alkyl group having from 1 to 3 carbon atoms, or of an addition saltthereof with a pharmaceutically acceptable organic or inorganic acid, fortreating apetite disorder. A pharmaceutical composition that comprises atherapeutically effective amount of a 1-(3-chlorophenyl)-3-alkylpiperazine offormula (I) as previously defined or of an addition salt thereof with apharmaceutically acceptable organic or inorganic acid, and at least onepharmaceutically acceptable excipient.
