If the surgery report shows no active bladder cancer and your doctors have said chemotherapy is not needed, that is generally a reassuring sign that the main treatment has been successful. The vitamin or nutritional medicines given afterwards are usually meant to support recovery, improve strength, help healing, and correct weakness or nutritional deficiencies that can happen after major illness or surgery. In many cases, these supplements are supportive rather than essential for cancer treatment itself. Expensive branded vitamins are not always medically superior to simpler generic supplements if the ingredients and doses are similar, but the exact need depends on your nutrition, weight, blood reports, appetite, and overall recovery. It is reasonable to discuss this openly with your treating doctor and ask whether a lower-cost generic alternative would be sufficient in your case. Focus on a good diet with enough protein, fluids, fruits, and vegetables, because recovery after cancer surgery also depends a lot on overall nutrition and physical strength. Regular follow-up remains important even when the disease is currently inactive.