A chemotherapy patient should not take Septran DS Tablet without consulting their doctor. Septran DS contains sulfamethoxazole and trimethoprim, which are antibiotics used to treat certain bacterial infections. However, an unhealed surgical wound for two months needs proper medical evaluation to find the cause, such as infection, delayed healing due to chemotherapy, poor nutrition, or other health conditions. Your doctor may prescribe an antibiotic only if there is evidence of a bacterial infection and after considering your chemotherapy medicines, blood counts, kidney function, and overall health. Avoid self-medicating, as unnecessary antibiotic use can cause side effects and antibiotic resistance. Keep the wound clean and follow your surgeon's wound care instructions. Seek medical advice promptly if you notice increased pain, redness, swelling, warmth, pus discharge, fever, or worsening of the wound.