Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Phenolics, a broad class of compounds found in many plants (including flavonoids, tannins, and phenolic acids), have a long history of traditional use in the treatment of cough and other respiratory ailments. Herbal remedies such as thyme, sage, and eucalyptus, which are rich in phenolic compounds, have been used in folk medicine for their purported soothing, antimicrobial, and anti-inflammatory effects. These traditional uses often involve infusions, syrups, or inhalations prepared from phenolic-rich plants.

While in vitro and animal studies indicate that certain phenolics may have antitussive (cough-suppressing), anti-inflammatory, or antioxidant effects, robust clinical evidence in humans is limited. Some small studies suggest mild benefits, such as reduced throat irritation or slight symptom improvement, but these are not consistent or strong enough to form a scientific consensus. Most over-the-counter cough remedies containing plant extracts leverage the traditional reputation of phenolics more than solid clinical research. Thus, their use in treating general cough is primarily justified by tradition, with modest support from basic science but lacking high-quality human trials.

More about phenolics (various)
More about Cough (general)

Other ingredients used for Cough (general)

Other health conditions supported by phenolics (various)

Products containing phenolics (various)