[The use of megestrol acetate to stop urine spraying in castrated male cats (author's transl)].

The use of megestrol acetate to stop urine spraying in castrated male cats Four castrated male cats were treated with megestrol acetate because they were showing signs of urine spraying. The dosage used was 5 mg a day for seven days followed by 5 mg every three days for 21 days. The treatment did not exceed one month. Treatment was successful in three of the four animals with this therapeutic regime. A relapse was noticed one year after the initial treatment in two of these cats. Treatment was resumed in one case, while in the other case spontaneous regression of urine spraying occurred. No relapse have been reported after six months. Other methods of treatment used to suppress this undesirable behavior are also discussed.