USE OF PHENETHANOLAMINE DERIVATIVES IN THE TREATMENT OF GASTROINTESTINAL DISORDERS
The use of compounds of formula (I) in which: R<0> is hydrogen, methyl or hydroxymethyl; R<1> is substituted alkyl; R<2> and R<3> are each hydrogen, halogen, hydroxy, alkoxy, carboxy, alkoxycarbonyl, alkyl, nitro, haloalkyl group, or substituted alkyl; X is oxygen or sulphur; and Ar is optionally substituted phenyl or naphtyl; and pharmaceutically acceptable salts thereof in the treatment of gastrointestinal disorders is described.