Levamisole Hydrochloride: Purposes & Side Effects. Levamisole Hydrochloride, originally created for veterinary uses, has now transformed into essential in medical medicine. It is identified by its CAS number 16595-80-5 and EINECS number 240-654-6. This drug is a snow-white crystal-like powder, noted for its strong anti-parasitic effects. It is primarily produced in China, conforming to rigorous…