Modulation in Airway Smooth Muscle Reactivity and Improvement in Lung Function of Cigarette Smokers and Passive Non-smokers Following Garcinia kola treatment: http://www.doi.org/10.26538/tjnpr/v1i4.7. Trop J Nat Prod Res. 2017;1(5):209-212. Accessed January 2, 2026. https://www.tjnpr.org/index.php/home/article/view/338