 <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]  expired or no longer needed. Consult your pharmacist or local waste disposal company.The uses of Tebentafusp-Tebn Intravenous: This medication is used to treat a certain type of cancer (uveal melanoma). Tebentafusp belongs to a class of drugs known as monoclonal antibodies. It works by slowing or stopping the growth of cancer cells. How to use Tebentafusp-Tebn 100 Mcg/0.5 Ml Intravenous Solution Read the Patient Information Leaflet if available from your pharmacist before you start using tebentafusp and each time you get a refill. If you have any questions, ask your doctor or pharmacist. This medication is given by injection into a vein as directed by your doctor, usually once a week. The injection is given by a health care professional, usually over 15 to 20 minutes. The dosage is based on your medical condition and response to treatment. To reduce your risk of side effects, your doctor may prescribe other medications (such as dexamethasone) before each treatment to help reduce side effects. Also, your doctor may start this medication at a low dose and gradually increase your dose.The side effects of Tebentafusp- </s>