Heart failure. Some specific hawthorn products (Faros 300 by Lichtwer Pharma, Crataegutt forte by Wilmer Schwabe Pharmaceuticals, or HeartCare, Nature’s Way) seem to improve some heart failure symptoms in some people with mild to moderate heart failure. However, other research shows that these products may actually worsen heart failure and increase the risk of death or hospitalization.
Anxiety. There is some evidence that hawthorn, combined with magnesium and California poppy (a product called Sympathyl, which is not available in the U.S.), might be useful in treating mild to moderate anxiety disorders.
Chest pain ("angina"). Some research suggests that taking hawthorn might reduce chest pain.
High blood pressure Some research shows that hawthorn might reduce blood pressure, but other research shows no benefit.
Decreased heart function.
Blood circulation problems.
Irregular heartbeat (arrhythmias).
Low blood pressure.
High cholesterol.
Muscle spasms.
Sedation.
Other conditions.