Hawthorn helps to bring the blood pressure and heart rate to normality by improving circulation to the heart and the brain and strengthening the heart beat, as well as lowering the cholesterol levels and softening the hardened arterial walls. Considered best traditional herb for angina, mental fatigue and poor concentration, irregular heart beat and even insomnia, due to its mild tranquilizing effect.
Ref:
1. Herbal Remedy, Hawthorn Extract, Can Help The Heart, Review Finds." ScienceDaily. ScienceDaily, 23 January 2008. <www.sciencedaily.com/releases/2008/01/080122203321.htm>.
2. Hawthorn (Crataegus spp.) in the treatment of cardiovascular disease Pharmacogn Rev. 2010 Jan-Jun; 4(7): 32–41. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3249900/#