 <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]  Tell your doctor if your nausea and vomiting lasts or if it gets worse.The side effects of Zuplenz Oral: Headache, lightheadedness, dizziness, drowsiness, tiredness, or constipation may occur. If these effects last or get worse, tell your doctor promptly. To minimize dizziness and lightheadedness, get up slowly when rising from a sitting or lying position. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: abdominal pain, muscle spasm/stiffness. Get medical help right away if you have any very serious side effects, including: chest pain, slow/fast/irregular heartbeat, severe dizziness, fainting. This medication may increase serotonin and rarely cause a very serious condition called serotonin syndrome/toxicity. The risk increases if you are also taking other drugs that increase serotonin, so tell your doctor or pharmacist of all the drugs you take (see Drug Interactions section). Get medical help right away if you develop some of the following symptoms: fast heartbeat, hallucinations, loss of </s>