Acetylcysteine (Acyden) 200mg Powder for Oral Solution Mucolytic Sachet 10's is a medication used to help relieve symptoms of respiratory conditions associated with excessive or thick mucus, such as chronic bronchitis, asthma, or cystic fibrosis. It works by thinning and loosening mucus in the airways, making it easier to cough up and clear from the lungs. Each sachet contains 200 mg of acetylcysteine and is dissolved in water before oral intake.