brown sheath of andrographis paniculata, commonly known as creat or green chiretta

andrographis paniculata creat green chiretta coronaviruses pathogen covid19 sarscov2 alkaloid bush kariyat asia thai herb hempedu bumi bacteria herbal background acanthaceae cough inflammation andrographolide axillary akar cerita 14deoxyandrographolide flu foliage medicine beauty botany spring petal white blossom floral organic leaf garden nature flower plant healthy sheath seed brown commonly inactivation important note select focus