Is hawthorn extract effective for treating chronic heart failure (CHF)?
The trials did not all measure the same outcomes, and several did not report what other CHF treatments patients were receiving. Data reporting on relevant mortality and morbidity, such as cardiac events, was limited to the reporting of deaths in one trial (three deaths in the active group and one in the control group).
Hawthorn extract (made from the dried leaves, flowers and fruits of the hawthorn bush) is advocated as an oral treatment option for CHF. It is among the most popular herbal medicinal products in the USA and in Europe, where it is marketed in some countries as a prescription medicine. It has been suggested that hawthorn extract has positive inotropic effects, decreases active ventricular conduction time, and increases coronary blood flow.