Important information (mandatory information): Ichtholan 50% Ointment. Active ingredient: Ammonium bituminosulfonate (Ichthyol). Indications: For the maturation of boils and abscesses, and as supportive treatment for gonarthrosis, bruises, and sprains. Warning: Contains wool wax and butylhydroxytoluene. Source: Information from the package insert As of September 2022