Take captopril exactly as prescribed by your doctor. Follow all directions on your prescription label. Your doctor may occasionally change your dose. Do not use this medicine in larger or smaller amounts or for longer than recommended.
Captopril is usually taken 1 hour before meals. Follow your doctor's instructions.
Call your doctor if you have ongoing vomiting or diarrhea, or if you are sweating more than usual. You can easily become dehydrated while taking captopril. This can lead to very low blood pressure, electrolyte disorders, or kidney failure.
Drink plenty of water each day while you are taking captopril.
Your blood pressure will need to be checked often, and you may need frequent blood tests.
This medication can cause false results with certain medical tests. Tell any doctor who treats you that you are using captopril.
If you need surgery, tell the surgeon ahead of time that you are using captopril. You may need to stop using the medicine for a short time.
If you are being treated for high blood pressure, keep using this medicine even if you feel well. High blood pressure often has no symptoms. You may need to use blood pressure medicine for the rest of your life.
Store at room temperature away from moisture and heat. Keep the bottle tightly closed when not in use.
 Detailed Captopril dosage information
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
