Calcium hydroxybenzenesulfonate side effects include symptoms such as stomach upset, nausea, heartburn, and loss of appetite. Calcium hydroxybenzenesulfonate is a capillary protective agent, and commonly used dosage forms include capsules and dispersible tablets. It is mainly used in the treatment of microvascular disease, varicose vein syndrome, venous insufficiency associated with microcirculatory disorders, as well as adjunctive treatment of venous stripping and venous sclerosis method. Patients also need to pay attention to: known allergic reaction to calcium hydroxybenzenesulfonate patients prohibited; pregnant women with drugs is not clear, should be weighed against the advantages and disadvantages of careful use; lactating women should stop using drugs or breastfeeding. If you need to apply calcium hydroxybenzenesulfonate, please follow the doctor’s instructions to standardize the treatment, do not blindly use their own medication.