 <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] . Cholestyramine and colestipol can decrease the absorption of chlorothiazide. If you are taking either of these drugs, take them at least 4 hours before or after taking chlorothiazide. Tell your doctor if your condition does not get better or if it gets worse (your blood pressure readings remain high or increase).The side effects of Diuril Oral: Dizziness, lightheadedness, headache, blurred vision, loss of appetite, stomach upset, diarrhea, or constipation may occur as your body adjusts to the medication. You may also experience decreased sexual ability. If any of these effects last or get worse, tell your doctor or pharmacist promptly. To reduce the risk of 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. This medication can cause dehydration and electrolyte imbalance. Tell your doctor right away if you have any symptoms of dehydration or electrolyte imbalance, such as confusion, unusual dry mouth/thirst, fast/irregular heartbeat, severe dizziness/lightheadedness, or seizures </s>