 <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]  questions, ask your doctor or pharmacist. If you suddenly stop using this medication, you may have withdrawal symptoms (such as headache, mental/mood changes such as irritability/nervousness). To help prevent withdrawal, your doctor may lower your dose slowly. Withdrawal is more likely if you have used green tea for a long time or in high doses. Tell your doctor or pharmacist right away if you have withdrawal. This product can decrease the amount of iron you get from food/supplements. If you have low iron levels, do not take green tea with meals or iron supplements. Take this product between meals. If your condition lasts or gets worse, or if you think you may have a serious medical problem, get medical help right away.The side effects of Green Tea Oral: Nausea, diarrhea, upset stomach, headache, and dizziness may occur. If any of these effects last or get worse, contact your doctor promptly. Tell your doctor right away if you have any serious side effects, including: fast/irregular heartbeat, mental/mood changes (such as nervousness, confusion), trouble sleeping, restlessness, shakiness (tremor), seizures, signs of liver problems (such as nausea/v </s>