Brand Name
Tenoretic
Common Name
atenolol - chlorthalidone
In this drug factsheet:
DIN (Drug Identification Number)| 02049988 | TENORETIC 100/25MG TABLET |
| 02049961 | TENORETIC 50/25MG TABLET |
How does this medication work? What will it do for me?
This is a combination product that contains two medications, atenolol and chlorthalidone. It is used to treat high blood pressure. Atenolol is a beta-blocker that works by decreasing the workload of the heart. Chlorthalidone is a diuretic (water pill) that helps to eliminate excess salt and water from the body.
Your doctor may have suggested this medication for conditions other than the ones listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.
Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.
How should I use this medication?
The eventual dose of atenolol-chlorthalidone is determined by treating with each of the ingredients separately (i.e., atenolol and chlorthalidone) and finding the best daily dose for each. The combination medication may then be used at the appropriate dose. The recommended dose of atenolol-chlorthalidone ranges from 1 tablet of the 50 mg/25 mg combination daily to 1 tablet of the 100 mg/25 mg combination daily. If blood pressure is not adequately controlled after using the higher strength medication, the doctor may prescribe an additional blood pressure lowering medication that works in a different way.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is very important that this medication be taken regularly and exactly as prescribed by the doctor. Do not stop taking this medication without first talking with your doctor. If you miss a dose, take it as soon as possible and continue on with your regular schedule. If it is within eight hours of your next dose, skip the missed dose and continue on with your regular dosing schedule. Do not take a double dose to make up for a missed one.
Do not stop taking this medication suddenly without checking with your doctor first. Stopping this medication suddenly after you have been taking it for a while may cause unpleasant and potentially harmful side effects.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.
What form(s) does this medication come in?
50/25
Each white, round, biconvex tablet, scored and embossed 50/25 on one face and plain on the other, contains atenolol 50 mg and chlorthalidone 25 mg. Nonmedicinal ingredients: magnesium stearate, microcrystalline cellulose, povidone and sodium starch glycolate.
100/25
Each white, round, biconvex tablet, scored and embossed with 100/25 on one face and plain on the other, contains atenolol 100 mg and chlorthalidone 25 mg. Nonmedicinal ingredients: magnesium stearate, microcrystalline cellulose, povidone and sodium starch glycolate.
Some medications may have other generic brands available. Always ask your doctor or pharmacist about the safety of switching between brands of the same medication.
Who should NOT take this medication?
Atenolol - chlorthalidone should not be taken by people who:
- are allergic to atenolol, chlorthalidone or to any ingredients of the medication
- are allergic to sulfa medications (e.g. sulfamethoxazole)
- have a severely slow heart rate
- have a serious heart block
- have congestive heart failure
- are not able to expel urine
- have very low blood pressure
- have severe peripheral arterial disorders (blockage of blood flow to limbs of body)
- have a condition known as pheochromocytoma (in the absence of alpha-blockade)
- have metabolic acidosis
- have a condition known as right ventricular failure caused by pulmonary hypertension
- have a condition known as "sick sinus syndrome"
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