 <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]  using this medication, tell your doctor or pharmacist your medical history, especially of: kidney problems, thyroid problems (underactive or overactive). This drug may make you dizzy or blur your vision. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis). The balance of certain natural minerals in your blood (calcium, magnesium, potassium) can affect how this drug works in your body. Certain drugs such as "water pills" (diuretics) may affect the normal balance of these minerals. Tell your doctor or pharmacist if you are taking a "water pill" or if you have a history of mineral imbalance. Ask your doctor or pharmacist whether you should take a nutritional supplement or follow a special diet. Before having surgery or certain procedures on your heart (such as electrical cardioversion), tell your doctor or dentist that you are using this medication. Infants and children may be more sensitive to the effects of this drug, especially the effects on the heartbeat. During pregnancy, this medication should be used only when clearly needed. Discuss the </s>