Cilnidipine Tablet is a long-acting antihypertensive drug that patients can take for a long time. Side effects such as urinary system, allergic reaction and digestive system may occur. Cilnidipine is a kind of drug among calcium antagonists, which has a longer action time and belongs to the long-acting antihypertensive drugs, which can keep the blood pressure stable while controlling it. So if the use of cilnidipine can control high blood pressure to the right range, it can be used for a long time. Side effects of Cilnidipine tablets are shown in urinary system: such as frequent urination, uric acid, creatine, rise in urea nitrogen, positive urinary protein and so on. Allergic reactions: such as drug rash, redness and itching. Digestive system aspects: e.g. vomiting, abdominal pain, thirst and constipation. Circulatory system: flushing, palpitations, dryness and chest pain. Blood system: thrombocytopenia, abnormal white blood cell count and neutrophils. Allergy to any components in Cilnidipine Tablets, pregnancy, breastfeeding, as well as working at heights, driving motor vehicles, operating machinery work, need to be prohibited. It is recommended to choose and take antihypertensive drugs under the supervision of a physician.