Plants in Respiratory Disorders I- Anti-asthmatics, A Review
Simeon K. Adesina *
Department of Pharmacognosy and Natural Medicine, Faculty of Pharmacy, University of Uyo, Uyo, Akwa Ibom State, Nigeria.
Imoh Imeh Johnny
Department of Pharmacognosy and Natural Medicine, Faculty of Pharmacy, University of Uyo, Uyo, Akwa Ibom State, Nigeria.
Gbola Olayiwola
Department of Clinical Pharmacy and Pharmacy Administration, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Aim of This Review: Respiratory disorders pose a big threat to life and constitute a major public health problem worldwide. This review is an attempt to bring together some of the common medicinal plants traditionally used to manage asthma. The review focuses on anti-asthmatic plants, their chemistry and pharmacology in an attempt to justify use and also provide a direction for future research.
Study Approach: Information on the above was sourced from published articles and reviews on the subject available from various data bases and journals. Fifty-six medicinal plants that have been investigated for anti-asthmatic properties have been reviewed.
Findings: Table 1 gives a list of plants reviewed and the mechanism of anti-asthmatic action. Herbal products are receiving increasing attention all over the world for the management of respiratory disorders as these have shown anti-asthmatic, antihistaminic, anti-allergic, anti-anaphylactic and anti-inflammatory activities. The biochemistry and medicinal significance of polyphenols and flavonoids are now better appreciated in the management of respiratory disorders.
Conclusion: Medicinal plants remain the main ingredients of indigenous medicines; this review justifies the need for polyherbal formulations for use in the management of respiratory disorders.
Keywords: Respiratory disorders, anti-asthmatic plants, phytochemistry, ethnopharmacology, biological studies.