Lutrophen and Blood Filtration cannot prevent cerebral thrombosis (i.e., stroke), and it is advisable to consult a doctor if necessary. Cerebral thrombosis is called stroke in traditional Chinese medicine, and it often appears with symptoms such as sudden fainting, hemiplegia (one side of the limb can not move freely), numbness of the limb, tongue lame, crooked tongue, and numbness of the side of the body, and so on, and it is generally treated with prescriptions of dispelling the wind and dispelling the evil, and replenishing the positive qi. Lulutong is bitter and flat in nature, belonging to the liver and kidney meridians, with the efficacy of dispelling wind and activating collaterals, inducing diuresis and promoting menstruation, and is commonly used in the treatment of paralyzing pain in the joints, numbness and constriction, oedema and distension, as well as breast milk, menstrual closure, and so on. It is forbidden to be taken by those who have excessive menstruation and cold blood avalanches. Blood Extract is sweet, salty and flat in nature, and belongs to the heart and liver meridians. It has the efficacy of activating blood circulation, resolving blood stasis, stopping bleeding, and promoting muscle growth and convergence of sores, and can be used internally and externally, and is often used internally for treating pain and stasis in the heart and abdomen, and is often used externally in the treatment of bruises, bleeding from wounds, and sores and ulcers. People without blood stasis should be cautious of taking it; pregnant women should be cautious of using it. Lulutong and blood exhaust cannot prevent and treat stroke, but can be prevented by adopting good dietary habits as well as work and rest, regular medical checkups, and so on. It is recommended that patients in need of treatment should consult a doctor in a timely manner and take treatment under the guidance of the doctor.