Stalcal DB 500mg Tablet is used for the treatment of haemorrhoids (piles), varicose veins (enlarged, swollen, and twisted veins), and diabetic retinopathy (damage to light-sensitive the black part of the eye). It contains Calcium Dobesilate, which improves blood flow in veins (a type of blood vessel) by decreasing the thickness of blood and also relaxes the muscles of the affected part of the body (legs, feet, anus, eyes) by reducing the leakage and fragility of blood vessels. In some cases, you may experience certain common side effects such as fever, gastrointestinal disorders, skin reactions, and joint pain. Before taking this medicine, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medications you are taking and pre-existing medical conditions.