- свръхчувствителност (алергия) към залеплон или към някоя от останалите съставки на Sonata,
• hypersensitivity (an allergy) to zaleplon or to any other ingredients of Sonata • sleep apnoea syndrome (stopping breathing for short periods while asleep) • severe kidney of liver problems • myasthenia gravis (very weak or tired muscles) • severe breathing or chest problems