 <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] -800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: severe dizziness, fainting, fast/slow/irregular heartbeat.  Notes Do not share this medication with others. Lifestyle changes such as stress reduction programs, exercise, and dietary changes may increase the effectiveness of this medicine. Talk to your doctor or pharmacist about lifestyle changes that might benefit you. Lab and/or medical tests (such as liver/kidney function, EKG) may be done while you are taking this medication. Keep all medical and lab appointments. Consult your doctor for more details. Have your blood pressure checked regularly while taking this medication. Learn how to monitor your own blood pressure at home, and share the results with your doctor. There are different tablet strengths of this medication available. Some tablet strengths may not be used in place of others. Do not change tablet strengths or use a different number of tablets for your dose without consulting your doctor or pharmacist.  Missed Dose If you miss a dose, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch </s>