This fact sheet provides basic information about hawthorn—common names, what the science says, potential side effects and cautions, and resources for more information.
Hawthorn is a spiny, flowering shrub or small tree of the rose family. The species of hawthorn discussed here are native to northern European regions and grow throughout the world.
Historically, hawthorn fruit has been used for heart disease since the first century. It has also been used for digestive and kidney problems. More recently, hawthorn leaf and flower have been used as folk or traditional remedies for heart failure, a weakness of the heart muscle that prevents the heart from pumping enough blood to the rest of the body, which can lead to fatigue and limit physical activities. Hawthorn is also used for other heart conditions, including symptoms of coronary artery disease (such as angina).
The hawthorn leaf and flower are used to make liquid extracts, usually with water and alcohol. Dry extracts can be put into capsules and tablets.