 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  injection site, the skin and/or muscle may be severely damaged. Tell your doctor right away if you have irritation, redness, swelling, or pain at the injection site.The side effects of Zynlonta Intravenous: See also How to Use section. Tiredness, nausea, diarrhea or constipation, abdominal pain, vomiting, decreased appetite, or muscle/joint pain may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. People using this medication may have serious side effects. However, you have been prescribed this drug because your doctor has judged that the benefit to you is greater than the risk of side effects. Careful monitoring by your doctor may decrease your risk. Tell your doctor right away if you have any serious side effects, including: signs of too much body fluid (such as new or worsening swelling or puffiness, weight gain, chest pain, shortness of breath). This medication decreases bone marrow function, an effect that may lead to a low number of blood cells such as red cells, white cells, and platelets. This effect can cause anemia, decrease your body's ability to fight an infection, or cause easy bruising/bleeding. Tell your doctor right away </s>