Answer
Guaifenesin in Covonia All-in-One Chesty Cough, Cold & Flu Relief Oral Solution acts as an expectorant, reducing the viscosity of tenacious sputum.
Sources for this answer
- Covonia All-in-One Chesty Cough, Cold & Flu Relief Oral SolutionThornton & Ross Ltd · emc · SmPC §5.1 Pharmacodynamic properties · Version 12Document updated
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