The active ingredient in Andromin is Calcium Hydroxybenzenesulfonate, which is administered by swallowing with a meal. Calcium hydroxybenzenesulfonate is swallowed with a meal, and the blood concentration of the drug reaches its peak 6 hours after oral intake and is maintained until 10 hours. Different dosages and courses of treatment are chosen depending on the indication, but all are taken with meals. The drug is mainly used in the treatment of microvascular diseases (for example, diabetic microangiopathy and microcirculatory disorders associated with chronic organic diseases), varicose vein syndromes (for example, primary varicose veins and varicose ulcers), microcirculatory disorders in combination with venous insufficiency, adjunctive treatment of venous stripping and venous sclerosis (for example, prevention of postoperative tissue edema). Drugs should be used under medical supervision.