Evidence supporting the use of: Menthol
For the health condition: Cough (dry)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Menthol is commonly used in over-the-counter remedies for dry cough, such as lozenges and topical ointments. Its use is supported by scientific evidence, though the strength of that evidence is moderate. Menthol acts as a counterirritant, producing a cooling sensation by activating the TRPM8 receptors in the respiratory tract. This sensation can temporarily suppress the cough reflex and provide subjective relief from throat irritation, which is often a trigger for dry cough.

Several studies have demonstrated that menthol can reduce cough sensitivity in both healthy volunteers and individuals with acute cough. For example, a 2012 study published in "Chest" found that inhaled menthol reduced cough sensitivity to capsaicin in healthy adults. However, systematic reviews and guidelines note that while menthol provides symptomatic relief, there is limited evidence from large, high-quality randomized controlled trials to fully endorse its effectiveness for all patients with dry cough. Most of its use is based on its ability to soothe the throat and its subjective benefits, rather than robust evidence for altering the underlying cause of cough.

In summary, menthol’s use for dry cough is scientifically plausible and supported by moderate evidence for symptomatic relief, but further research is needed to clarify its efficacy compared to other treatments.

More about Menthol
More about Cough (dry)

Products containing Menthol

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