Erdosteine is a mucolytic drug used in the treatment of acute and chronic respiratory diseases. It also improves the symptoms associated with short episodes of chronic bronchitis.

Erdosteine is a prodrug that is metabolised into N-thiodiglycolyl-homocysteine whereby free thiol groups are formed, leading to the opening of the disulphide bonds of the bronchial mucoproteins, thus reducing the viscosity of mucus and purulent sputum. It also antagonises the local formation of free radicals and inhibits elastase enzyme activity and bacterial adhesion to epithelial cells.

The usual dose for elderly patients and adults above 18 years is 1 capsule twice daily for 10 days. But studies show that in chronic cases, Erdosteine can be given up to 12 months or as directed by the physician. Erdosteine capsule may be taken with or without food.

It is contraindicated in patients who have hypersensitivity to Erdosteine. It should not be used in patients with creatinine clearance <25 ml/min, or with severe liver failure.

The common side effect is epigastric pain. Other side effects include headache, cold, taste alterations, nausea, vomiting, diarrhea, angioedema, and other skin allergic reactions.

The use of Erdosteine in pregnant or breastfeeding women is not recommended.

It should be used with caution in mild liver failure. In that case, the dose should not exceed 300 mg per day.

Renal Impairment: CrCl <25 ml/min: Contraindicated.

Hepatic Impairment:

• Mild to moderate: Max: 300 mg daily.
• Severe: Contraindicated.

Cough expectorants & mucolytics

Keep in a dry place away from light and heat. Keep out of reach of children.