Leonour is used in modern herbal medicine mainly for the treatment of heart problems and for the normalization of the period. Leonour is one of the most important herbs to stimulate heart function. It is used to treat hypertension and tachycardia. Responsible for its effectiveness is the alkaloid leonurin, which dilates the arteries (primary and secondary) and improves blood circulation in the body. Generally, leonour is a cardiotonic that reduces the chance of blood clots, lowers cholesterol and triglycerides (systematically) quantity: 100g and which is especially effective in cases where heart disorders are caused by nervous overload and stress. Leonur is also very effective in normalizing the period (especially when the blood flow is poor or the period is delayed) and the treatment of amenorrhea and dysmenorrhea. The ingredient that is responsible for the effectiveness of leonurin in normalizing the period is leonurinine glycoside (leonurinine). It is also recommended to consume leonour in the treatment of hyperthyroidism.