Menthol pharmacology and its potential impact on cigarette smoking behavior.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanisms and observational literature without systematic review methodology
PubMed 14982706 · doi:10.1080/14622200310001649469
What was done
This review synthesized literature on the pharmacological and physiological actions of menthol—both alone/unburned and within the complex chemical matrix (>4,000 substances) of burned cigarette smoke—focusing on its potential influence on smoking behavior, sensory perception, and exposure metrics.
What was found
No quantitative data or effect estimates were reported in the abstract. Menthol produces cooling, local anesthesia, bronchodilation, respiratory changes, electrophysiological effects, and alterations in drug absorption and metabolism. Subjectively, it provides smoothness and reduces perceived smoke harshness. Evidence regarding its effects on carbon monoxide exposure and smoking topography parameters was inconclusive.
Why it matters
Menthol alters sensory inputs and drug metabolism during cigarette smoking, highlighting biological mechanisms that could impact nicotine addiction, carcinogen exposure, and tobacco control policy.
Limits
This is a narrative review presenting no systematic search protocol, quantitative synthesis, or original data. The interaction with over 4,000 other compounds in cigarette smoke complicates isolating menthol's specific pharmacological and toxicological effects.
Cited by
- supports Cigarette manufacturers added bronchodilator compounds to cigarettes to open airways and facilitate deeper inhalation of nicotine into the lungs.