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Atenolol, Chlorthalidone Oral tablet

It is used to treat high blood pressure

Generic Name: atenolol-chlorthalidone  |  Brand Name: Tenoretic

Brand Names: Tenoretic 100, Tenoretic 50, Tenoretic

What is this medicine?

ATENOLOL; CHLORTHALIDONE (a TEN oh lole; klor THAL i done) is a combination of a beta-blocker and a diuretic. It is used to treat high blood pressure.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
  • chest pain or angina
  • decreased urine
  • diabetes
  • gout
  • heart or vessel disease like slow heart rate, worsening heart failure, heart block, sick sinus syndrome or Raynaud's disease
  • kidney or liver disease
  • lung or breathing disease
  • pheochromocytoma
  • thyroid disease
  • an unusual or allergic reaction to chlorthalidone, atenolol, other beta-blockers, sulfa drugs, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

How should I use this medicine?

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. You can take this medicine with or without food. Take your doses at regular intervals. Do not take your medicine more often than directed. Do not stop taking this medicine suddenly. This could lead to serious heart-related effects.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

  • clonidine
  • diuretics
  • indomethacin
  • lithium
  • medicines for high blood pressure or heart failure

What should I watch for while using this medicine?

Visit your doctor or health care professional for regular check ups. Check your heart rate and blood pressure regularly. Ask your doctor or health care professional what your blood pressure should be and when you should contact him or her.

Check with your doctor or health care professional if you get an attack of severe diarrhea, nausea and vomiting, or if you sweat a lot. The loss of too much body fluid can make it dangerous for you to take this medicine.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this drug affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol can make you more drowsy and dizzy. Avoid alcoholic drinks.

This medicine can affect blood sugar levels. If you have diabetes, check with your doctor or health care professional before you change your diet or the dose of your diabetic medicine.

This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.

Do not treat yourself for coughs, colds, or pain while you are taking this medicine without asking your doctor or health care professional for advice. Some ingredients may increase your blood pressure.


Last Updated: March 11, 2009
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