Derived from the Crataegus manogyna plant, hawthorn, also called may flower, is a natural herbal supplement historically used to treat heart disease. Hawthorn contains several antioxidants, including quercetin and oligomeric procyandins, which may help protect your cells against oxidative damage. Other traditional applications of hawthorn include respiratory illnesses and circulatory problems. However, additional research is needed to support these potential health benefits of hawthorn. Discuss the risks of hawthorn with your medical provider before using this health supplement.
Common Side Effects
When used appropriately, hawthorn generally doesn't cause side effects. In certain people, however, hawthorn supplementation may cause stomach irritation, nausea, headache, fatigue or unusual sweating. Nausea and stomach discomfort may contribute to a temporary decrease in your usual appetite. Though infrequent, additional side effects may include agitation and insomnia. Mood and sleep-related changes may significantly interfere with your ability to complete your normal, daily tasks. Seek additional care from your heath care provider if these side effects persist or become severe.
Toxicity Side Effects
Hawthorn contains a class of compounds called tannins, which may cause toxicity if they accumulate in your body. Prolonged or excessive treatment with hawthorn may cause a drop in your blood pressure, or hypotension, or heart rate changes, also known as arrhythmia. If your blood pressure falls, you may experience severe dizziness, headache, blurred vision or loss of consciousness. Discuss these toxicity side effects immediately with your doctor if they arise while you are taking hawthorn. Without proper treatment, hawthorn toxicity may cause life-threatening health complications.
Drug Interactions
This herbal treatment may interact with certain medications. To limit your risk of side effects, always let your medical provider know if you are taking any other drugs or herbal treatment before you begin using hawthorn. Do not take hawthorn supplements in conjunction with calcium channel blockers, beta-blockers or digoxin. Hawthorn may enhance the effects of these prescription medications, which may increase your risk of developing heart-related changes or low blood pressure.
Contraindications
If you have certain health concerns or problems, hawthorn supplementation may not be appropriate. Anyone who has a heart condition should consult a doctor before using hawthorn supplements. Additionally, the safety of hawthorn has not been evaluated in pregnant women. For this reason, hawthorn supplements should not be used by expectant or breast-feeding mothers.
