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Generic Name: Nadolol [na-DOE-lol].
The Brand Name: Corgard.
Dosage Format: Oral tablet (20 mg, 40 mg, and 80 mg).
Drug Class: Non-cardioselective beta blockers.

What is Nadolol?

Nadolol is a beta-blocker that can affect the heart and circulation (blood flows through veins and arteries). Nadolol can be used to treat angina (chest pain) or hypertension (high blood pressure). Nadolol can also be used for additional uses that aren't listed in this medication guide.

Side effects of Nadolol

Seek medical attention immediately in the event that you exhibit warning signs of an allergic reaction, such as symptoms of hives, breathing difficulties, and swelling of your lips, face, and tongue.

Nadolol may cause serious side effects. Contact your doctor immediately. If you suffer from:

  • A feeling of lightheadedness, as if you're passing out.
  • Heartbeats that are slow.
  • Breathlessness (even at moderate exertion) or swelling and rapid weight gain.
  • Bronchospasm (wheezing, chest tightness, difficulty breathing).

Common adverse effects of nadolol could include:

  • A numbness or feeling of numbness or sensation on your feet or hands.
  • Dizziness.
  • Being tired.
  • Upset stomach, vomiting, diarrhea, constipation.
  • Vision issues and vision problems.
  • Mood fluctuations and confusion Memory problems and mood changes.

This isn't a complete list of possible side effects, and other side effects could be present. Contact your doctor for advice regarding medical effects. You can report any symptoms to the FDA at 1-800-FDA-1088.


Do not take nadolol in the case of asthma or a serious heart disease, or if your heart isn't able to pump blood correctly.

Before you take this drug.

It is not recommended to use the drug nadolol if you are allergic to it or if you suffer from

  • Asthma.
  • A serious heart problem like "AV block" (2nd or 3rd degree) or a heart condition that is severe.
  • If your heart isn't pumping blood effectively.

To ensure that nadolol is appropriate for you, inform your doctor that you suffer from:

  • Coronary arteriatric condition (clogged blood vessels).
  • Congestive heart failure.
  • A thyroid disorder.
  • Kidney disease.
  • Diabetes (taking nadolol could make it more difficult to determine if you have lower levels of blood sugar).
  • A history of allergies.

It isn't known if it will harm an unborn baby. Nadolol can cause problems with the heart or lungs of a baby in the event that the mother uses the medication during pregnancy. Consult your physician if you are expecting or plan to become pregnant while taking nadolol. Nadolol may be absorbed into breast milk and cause harm to the nursing infant. Do not breastfeed when taking nadolol.

How to take Nadolol?

Follow all the instructions on the prescription label. Your doctor might alter your dosage to ensure you are getting the best outcomes. Don't take nadolol in greater or lesser quantities or for longer periods than prescribed. Nadolol is usually taken once a day. Follow the doctor's dosage instructions with care. Do not miss doses or stop taking nadolol suddenly. Stopping suddenly may cause your condition to get worse. Follow your doctor's advice on tapering your dose. Your blood pressure is likely to be checked regularly. This medication can cause unexpected results in certain tests. Be sure to inform any doctor treating you about your use of nadolol. If you require surgery, inform the surgeon beforehand that you're using the drug nadolol. If you're receiving treatment for high blood pressure, you should continue taking this medication even if you are feeling well. The presence of high blood pressure is often accompanied by no signs. You could need blood pressure medication throughout your life. Nadolol is just one component of a comprehensive treatment plan for hypertension, which may comprise exercise, diet, and weight control. Be sure to follow your diet, medication, and exercise regimens carefully if you're being treated for hypertension. Keep the bottle at room temperature, free of heat, moisture, and light. Close the bottle when not being used.

Details on dosage

Usual Adult Dose for Angina Pectoris:

Initial dosage: 40 mg orally daily; can be increased to 40 to 80 mg every 3–7 days until the optimal response is reached or a noticeable heart rate decrease occurs.
Maintenance dose: 40–80 mg taken orally every day, and up to 240 mg every day is possible.
Maximum dose: 240 mg/day.

Usual Adult Dose for Hypertension:

Initial dose: 40 mg taken orally every day. It can be incremented in increments of 40 to 80 mg until the desired blood pressure reduction is reached.
Maintenance dosage: 40 to 80 mg once daily orally Up to 320 mg every day could be needed.

What happens if I miss a dose?

You should take the dose you missed when you remember. Do not take your missed dose if the scheduled dose falls less than eight hours from now. Do not take any additional dose to make up for the missed one.

What happens if I overdose?

For medical emergencies, seek emergency medical attention or contact the Poison Help line at 1-800-222-1222. The signs of an overdose could include an affected heart, extreme dizziness, and feeling faint.

What should be avoided?

Nostrolol can affect your reaction or thinking. Be cautious when you drive or perform things that require that you be aware. Drinking alcohol may increase your blood pressure and cause an increase in certain adverse effects of nadolol.

Interaction with other drugs

Inform your doctor about your current medications and all the ones you are about to start or stop taking, particularly:

  • Digoxin, digitalis.
  • Insulin or oral diabetes medicine.
  • Reserpine or any other blood pressure medication.

This list isn't complete. Other medications can interfere with nadolol, like prescription and over-the-counter medicines, vitamins, and herbal products. The interactions of all potential drugs are included in this medication guideline.



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