Synephrine HCL is a substance that is used for weight loss. It is obtained from bitter orange and has become quite popular lately because it has been made as substitute for ephedra, the herbal stimulant that has been banned from the U.S. and Canada.

What is ephedra and why was it banned from the U.S. and Canada? Ephedra is an herbal extract that was used in ancient Chinese medicine to treat hay fever, colds and asthma. It has been banned from being continuously sold as a weight loss supplement because it has an adverse stimulant effect on the brain, it constricts blood vessels consequently increasing blood pressure, and increases heart rate, and expand the bronchial tubes. This stimulant properties of ephedra are caused by its high level of ephedrine and pseudoephedrine in the body.

Ephedra likewise exhibits thermogenic properties producing body heat causing an increase in the body’s metabolic rate.

Aside from its dangers to health, ephedra became controversial and was eventually banned due to its use as an ingredient in the illegal production of metamphetamine.

Synephrine, obtained from the blossoming fruit of the Citrus aurantium tree, was substituted for ephedra because of its ephedra-free ingredients. However, it was believed Phentermine 37.5 over the counter that products containing synephrine or bitter orange exhibit adverse cardiovascular side effects. It is also reported to cause irregular heart beat, heart attack, stroke, fainting and even worse, death. It is also known to cause arrhythmia, a disorder characterized by abnormal electrical reactions in the heart.

The bitter orange and peel extract from the fruit of the Citrus aurantium tree is popularly marketed as dietary supplement to aid in weight loss and as appetite suppressant by altering the body’s metabolic processes and absorption of calories. Here is how bitter orange promotes weight loss: