Crataegus oxyacantha Q is a widely used for heart and high arterial tension. It is used as a sedative in cross, irritable patients with cardiac symptoms. It is used as chronic heart disease, with extreme weakness.Reference: 1. SCHWABE A compendium of RARE & CLINICALLY ESTABLISHED MOTHER TINCTURE Fourth edition. Dr. P.N. Varma , Dr Kusum Yadav , Dr. Ramachandran Valavan.