close-up of traditional herbal medicine plant kariyat or green chireta andrographis paniculata pods with green leaves and flower

alternative ancient andrographis antipyretic antiviral asian ayurvedic background benefit botany branch chireta closeup coronavirus covid creat cut drug flower fresh green health herb herbal infection isolated jone kariyat leaves medicine nature organic out paniculata plant pod remedy respiratory seedpod stem talai thai tract traditional treatment tree tropical white