Senega is native to North America. It has excellent expectorant properties which can help cure bronchial asthma especially when there is also difficulty in expectoration. It has the general ability to stimulate discharges, including the discharge of saliva. It can be used for oral rinsing and gargling against pharyngitis and laryngitis. It is very important to use the right dosage, otherwise it may irritate intestine walls and cause vomiting.