Sibirin, commonly known as Flunarizine Hydrochloride Capsules, does not usually cause an increase in blood pressure. Flunarizine Hydrochloride Capsules is a calcium channel blocker, which is capable of relieving vasospasm, antiepileptic, and reducing ischemic myocardial damage, and is mainly used in the treatment of cerebral hypoperfusion, vertebral artery ischemia, epilepsy, and other diseases. Adverse effects such as drowsiness, tiredness, insomnia, weight gain and dry mouth may occur after the use of this drug, but it does not cause an increase in blood pressure. In the case of increased blood pressure after taking the drug, it is recommended to further consult the cardiovascular internal medicine department, under the guidance of the doctor to clarify the cause of the disease and then lower the blood pressure treatment. Attention to flunarizine hydrochloride capsule component allergy, depression, acute cerebral hemorrhagic disease is prohibited; in the process of using the drug can not drive vehicles and operating machinery, to avoid drowsiness, fatigue and lead to accidents; for the elderly, pregnant women and other special populations need to be guided by a doctor to use the drug. Flunarizine hydrochloride capsules need to be used under the guidance of a doctor, avoid self-medication, so as not to cause adverse consequences.