Ephedrine: Ephedrine is an alkaloid derived from ephedra. It acts by stimulating sympathetic system. Ephedrine is used in decongestants and as a bronchodilator.

Actions: Ephedra increases heart rate, constricts blood vessels, dilates bronchioles and it stimulates brain. It also increases the metabolism.

Uses: Ephedra is used for the treatment of common cold, asthma, for weight loss as a dietary supplement.

Side effects: Due to its stimulant effects on sympathetic system it causes increased heart rate, irritability, insomnia serious side effects like heart attack, stroke were reported which caused deaths.