Eprazinone (trade names Eftapan, Isilung, Mucitux) is a mucolytic and bronchospasm relieving drug. It has been marketed in many European countries, but not in the US or United Kingdom. Indications Indications include acute and chronic bronchitis, cough, rhinitis, and asthma. Side effects Adverse effects include headache, somnolence, vertigo, heartburn, and nausea. References Piperazines Aromatic ketones Phenylethanolamine ethers