Calcium hydroxybenzenesulfonate eat how much for a course of treatment depends on the patient’s specific causes and conditions, such as diabetic retinopathy, varicose vein syndrome and venous insufficiency and other microvascular disease and other treatment course and dosage are different, it is recommended to follow the doctor’s instructions for use of the drug. 1. Diabetic retinopathy: When used for the treatment of diabetic retinopathy, the course of treatment for patients is generally 4-6 months. 2. Varicose vein syndrome and venous insufficiency: the course of treatment is generally 1 to 3 weeks. 3. Other microvascular diseases: the course of treatment is generally 1 to 2 months. Calcium hydroxybenzenesulfonate is a kind of cardiovascular system drugs, can be used for the treatment of diabetic retinopathy, angina pectoris, myocardial infarction, prevention of cerebral thrombosis, post-thrombotic sequelae, varicose vein syndrome and venous insufficiency. It should be noted that the use of calcium hydroxybenzenesulfonate is prohibited for those who are allergic to calcium hydroxybenzenesulfonate, pregnant women and nursing mothers, and patients may experience stomach discomfort, nausea and heartburn and other adverse reactions after taking the drug. It is recommended that patients use the drug under the guidance of a doctor, the specific dosage should consult a doctor, do not use without authorization, to avoid delays in the condition.