Generic Name: Atenolol and Chlorthalidone (a TEN oh lole & klor THAL i done)
Brand Name: Tenoretic
Medically reviewed by Drugs.com. Last updated on Aug 6, 2019.
Uses of Atenolol and Chlorthalidone:
- It is used to treat high blood pressure.
What do I need to tell my doctor BEFORE I take Atenolol and Chlorthalidone?
- If you have an allergy to atenolol, chlorthalidone, or any other part of atenolol and chlorthalidone.
- If you have a sulfa allergy.
- If you are allergic to atenolol and chlorthalidone; any part of atenolol and chlorthalidone; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
- If you have any of these health problems: Heart block, shock caused by heart problems, or slow heartbeat.
- If you have heart failure (weak heart).
- If you have any of these health problems: Asthma or other breathing problems like COPD (chronic obstructive pulmonary disease).
- If you have an adrenal gland tumor called pheochromocytoma.
- If you are not able to pass urine.
This is not a list of all drugs or health problems that interact with atenolol and chlorthalidone.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take atenolol and chlorthalidone with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Atenolol and Chlorthalidone?
- Tell all of your health care providers that you take atenolol and chlorthalidone. This includes your doctors, nurses, pharmacists, and dentists.
- Avoid driving and doing other tasks or actions that call for you to be alert until you see how atenolol and chlorthalidone affects you.
- To lower the chance of feeling dizzy or passing out, rise slowly if you have been sitting or lying down. Be careful going up and down stairs.
- Check blood pressure and heart rate as the doctor has told you.
- Have blood work checked as you have been told by the doctor. Talk with the doctor.
- This medicine may hide the signs of low blood sugar. Talk with the doctor.
- If you have high blood sugar (diabetes), you will need to watch your blood sugar closely.
- This medicine may make it harder to tell if you have signs of an overactive thyroid like fast heartbeat. If you have an overactive thyroid and stop taking atenolol and chlorthalidone all of a sudden, it may get worse and could be life-threatening. Talk with your doctor.
- Be careful in hot weather or while being active. Drink lots of fluids to stop fluid loss.
- Tell your doctor if you have too much sweat, fluid loss, throwing up, or loose stools. This may lead to low blood pressure.
- If you are on a low-salt or salt-free diet, talk with your doctor.
- Watch for gout attacks.
- If you have lupus, atenolol and chlorthalidone can make your lupus active or get worse. Tell your doctor right away if you get any new or worse signs.
- Do not stop taking atenolol and chlorthalidone all of a sudden. If you do, chest pain that is worse and in some cases heart attack may occur. The risk may be greater if you have certain types of heart disease. To avoid side effects, you will want to slowly stop atenolol and chlorthalidone as ordered by your doctor. Call your doctor right away if you have new or worse chest pain or if other heart problems occur.
- This medicine is a strong fluid-lowering drug (diuretic). Sometimes too much water and electrolytes (like potassium) in the blood may be lost. This can lead to severe health problems. Your doctor will follow you closely to change the dose to match your body's needs.
- You may need extra potassium. Talk with your doctor.
- If you have had a very bad allergic reaction, talk with your doctor. You may have a chance of an even worse reaction if you come into contact with what caused your allergy. If you use epinephrine to treat very bad allergic reactions, talk with your doctor. Epinephrine may not work as well while you are taking atenolol and chlorthalidone.
- This medicine may make you sunburn more easily. Use care if you will be in the sun. Tell your doctor if you sunburn easily while taking this drug.
- If you are 65 or older, use atenolol and chlorthalidone with care. You could have more side effects.
- This medicine may cause harm to the unborn baby if you take it while you are pregnant. If you are pregnant or you get pregnant while taking atenolol and chlorthalidone, call your doctor right away.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
How is this medicine (Atenolol and Chlorthalidone) best taken?
Use atenolol and chlorthalidone as ordered by your doctor. Read all information given to you. Follow all instructions closely.
- Keep taking atenolol and chlorthalidone as you have been told by your doctor or other health care provider, even if you feel well.
- This medicine may cause you to pass urine more often. To keep from having sleep problems, try not to take too close to bedtime.
- Talk with your doctor before using OTC products that may raise blood pressure. These include cough or cold drugs, diet pills, stimulants, ibuprofen or like products, and some natural products or aids.
What do I do if I miss a dose?
- Take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of fluid and electrolyte problems like mood changes, confusion, muscle pain or weakness, a heartbeat that does not feel normal, very bad dizziness or passing out, fast heartbeat, more thirst, seizures, feeling very tired or weak, not hungry, unable to pass urine or change in the amount of urine produced, dry mouth, dry eyes, or very bad upset stomach or throwing up.
- Signs of high blood sugar like confusion, feeling sleepy, more thirst, more hungry, passing urine more often, flushing, fast breathing, or breath that smells like fruit.
- Signs of a pancreas problem (pancreatitis) like very bad stomach pain, very bad back pain, or very bad upset stomach or throwing up.
- Feeling cold.
- Very bad dizziness or passing out.
- Slow heartbeat.
- Shortness of breath, a big weight gain, or swelling in the arms or legs.
- Low mood (depression).
- Fever, chills, or sore throat; any unexplained bruising or bleeding; or feeling very tired or weak.
- Yellow skin or eyes.
- A burning, numbness, or tingling feeling that is not normal.
What are some other side effects of Atenolol and Chlorthalidone?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Feeling dizzy, tired, or weak.
- Upset stomach or throwing up.
- Not hungry.
- Stomach cramps.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.
If OVERDOSE is suspected:
If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
How do I store and/or throw out Atenolol and Chlorthalidone?
- Store at room temperature.
- Protect from light.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
Consumer information use
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about atenolol and chlorthalidone, please talk with your doctor, nurse, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
More about atenolol / chlorthalidone
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- During Pregnancy
- Dosage Information
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- Drug class: beta blockers with thiazides