expectorant

drug

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Last updated

June 26, 2026

Quick Summary

An expectorant is a drug that helps to discharge or expel mucus from the respiratory tract. Coughing is a natural reflex that clears the airways of secretions and foreign material. While coughing can be a defense mechanism, it can also be caused by irritation or stimulation of receptors in various parts of the body.12

Guaifenesin is a common ingredient in cough medicines that helps to thin mucus, making it easier to cough up. Decongestants, often found in cough preparations, work by reducing secretions. Some cough medicines also contain antitussives, which suppress the cough reflex, like dextromethorphan.2

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therapeutics
The respiratory system
…or liquefy thick mucus (expectorants) and humidification (steam) that soothes the irritated mucous lining. While these treatments are widely prescribed, they have not been proven effective clinically. Likewise, although cough suppressants are used to reduce unnecessary coughing, they subvert the cough’s natural protective mechanism of ridding the airway of…
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…or liquefy thick mucus (expectorants) and humidification (steam) that soothes the irritated mucous lining. While these treatments are widely prescribed, they have not been proven effective clinically. Likewise, although cough suppressants are used to reduce unnecessary coughing, they subvert the cough’s natural protective mechanism of ridding the airway of…
Read More