Take this medication by mouth with or without food as directed by your doctor, usually twice daily.

The dosage is based on your medical condition and response to treatment. Your doctor may gradually increase your dose. Follow your doctor's instructions carefully.

Use this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day. Keep taking this medication even if you feel well. Most people with high blood pressure do not feel sick. It may take 2 to 4 weeks before you get the full benefit of this drug.

Tell your doctor if your condition does not get better or if it gets worse (your blood pressure readings remain high or increase).