Amixetrine is a drug that was formerly marketed in France but is now no longer sold. Amixetrine therapeutic functions are: aniinflammatory, anticholinergic, antidepressant, antispasmodic. The urinary metabolites of N-(2-phenyl-2-isoamyloxy) ethyl-pyrrolidine-hydrochloride (amixetrine) studied in man and in the dog demonstrated a comparable mode of transformation of the drugs for both species. In man, as in the dog, the principal metabolite coming from an omega-1-oxidation of the isoamyl chain corresponded to 2-phenyl-2-butoxy-(3-methyl-3-ol)ethyl-pyrrolidine.