Lumenac Effervescent Tablet Orange contains Acetylcysteine 600 mg, a mucolytic agent used primarily to reduce the viscosity of mucus in respiratory tract disorders. Acetylcysteine acts by breaking disulfide bonds in mucoproteins, thereby liquefying thick, tenacious secretions and facilitating their clearance from the airways. This medication is indicated for the management of conditions characterized by excessive or abnormal mucus production, such as chronic bronchitis, chronic obstructive pulmonary disease (COPD), cystic fibrosis, and bronchiectasis. Additionally, Acetylcysteine serves as an antidote in acetaminophen (paracetamol) overdose by replenishing intracellular glutathione, thus preventing hepatic damage. Lumenac Effervescent Tablet is formulated for oral administration, with the effervescent form enhancing palatability and promoting rapid dissolution and absorption. The orange flavor improves patient compliance, especially in those who have difficulty swallowing conventional tablets. Dosage should be individualized based on the clinical condition and patient response, with caution advised in patients with asthma or hypersensitivity to Acetylcysteine. Common adverse effects may include gastrointestinal disturbances such as nausea and vomiting, as well as rare hypersensitivity reactions. Lumenac should be used under medical supervision, ensuring appropriate hydration to optimize mucolytic efficacy.