 <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]  effects to Health Canada at 1-866-234-2345.The precautions of Ziac Oral: Before taking this medication, tell your doctor or pharmacist if you are allergic to bisoprolol or hydrochlorothiazide; or to other beta blockers (such as metoprolol, atenolol); or to other thiazide diuretics (such as chlorothiazide); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease, certain types of heart rhythm problems (such as sinus bradycardia, second- or third-degree atrioventricular block), heart failure, lung disease (such as asthma, bronchitis, chronic obstructive pulmonary disease-COPD), overactive thyroid (hyperthyroidism), diabetes, gout, untreated salt imbalance (such as high calcium, low potassium/magnesium), dehydration, blood circulation problems (such as peripheral vascular disease), certain muscle diseases (such as myasthenia gravis), lupus, recent nerve surgery ( </s>