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Atenolol belongs to a class of medications called beta-blockers. It is used to lower high blood pressure and to prevent the symptoms of Angina (chest pain).
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Atenolol belongs to a class of medications called beta-blockers. It is used to lower high blood pressure and to prevent the symptoms of Angina (chest pain). It works by reducing the demands put on the heart.
Atenolol is often used in combination with other high blood pressure medications such as diuretics (water pills) when the use of one medication by itself is not enough to control blood pressure.
Act Atenolol may be available under multiple brand names and/or in several different forms. Any specific brand name of Act Atenolol may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of Act Atenolol may not be used for all of the conditions discussed here.
Your doctor may have suggested Act Atenolol for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking Act Atenolol, speak to your doctor. Do not stop taking Act Atenolol without consulting your doctor.
Do not give Act Atenolol to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take Act Atenolol if their doctor has not prescribed it.
Our pharmacists are happy to answer your questions. Get in touch by text, live chat, phone or email. We're standing by 7 days a week.
The recommended adult dose of atenolol ranges from 50 mg to 200 mg daily depending on circumstances.
To treat high blood pressure, the usual adult starting dose is 50 mg taken by mouth, once a day. The full effect of the medication is usually reached within 1 to 2 weeks. If blood pressure is not reduced sufficiently after this time, your doctor may increase the dose of the medication to 100 mg once daily or add another blood pressure-lowering medication.
The usual starting dose to treat angina pain is 50 mg taken once a day. If, after one to two weeks symptoms are not reduced enough, your doctor may increase the dose to 100 mg once daily or 50 mg taken twice a day. The maximum dose for treating angina is 200 mg daily.
If you have reduced kidney function you may need much lower doses.
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 important to take Act Atenolol exactly as prescribed by your doctor. If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store Act Atenolol at room temperature, protect it from light and moisture, and keep it out of the reach of children.
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.
Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.
The side effects listed below are not experienced by everyone who takes Act Atenolol. If you are concerned about side effects, discuss the risks and benefits of Act Atenolol with your doctor.
The following side effects have been reported by at least 1% of people taking Act Atenolol. Many of these side effects can be managed, and some may go away on their own over time.
Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.
Although most of the side effects listed below don't happen very often, they could lead to serious problems if you do not seek medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
Stop taking the medication and seek immediate medical attention if any of the following occur:
Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking Act Atenolol.
We manage your refills and get in touch with your doctors for prescription renewals so that you always have the medication you need.
Each white-to-off-white, round, flat-faced, bevelled-edged tablet, marked with a logo on one side and scored with "AN" over "50" on the other side, contains 50 mg of atenolol. Nonmedicinal ingredients: magnesium stearate, microcrystalline cellulose, povidone, and sodium starch glycolate. Act Atenolol does not contain gluten.
Each white-to-off-white, round, flat-faced, bevelled-edged tablet, marked with a logo on one side and scored with "AN" over "100" on the other side, contains 100 mg of atenolol. Nonmedicinal ingredients: magnesium stearate, microcrystalline cellulose, povidone, and sodium starch glycolate. Act Atenolol does not contain gluten.
Do not take Act Atenolol if you:
We sort your medication into clearly labeled, individual packs so you can be sure you're taking the right dose at the right time.
There may be an interaction between atenolol and any of the following:
If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:
An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.
Medications other than those listed above may interact with Act Atenolol. Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the Nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.
Before you begin using a medication, be sure to inform your doctor of any medical conditions or Allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use Act Atenolol.
Breathing conditions: In general, people who have Asthma and certain other breathing problems or chronic lung disease should avoid taking a beta-blocker such as atenolol, as it can cause breathing difficulty. Low doses of atenolol may be taken with caution by people with asthma who do not respond to or cannot tolerate alternative treatment. If you have breathing problems, discuss with your doctor how Act Atenolol may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Act Atenolol, and whether any special monitoring is needed.
Drowsiness/reduced alertness: The use of atenolol is unlikely to impair your ability to drive or operate machinery. However, it should be taken into account that dizziness, fatigue, or a slower reaction time may occur.
History of heart failure: Beta-blockers, such as atenolol, can worsen existing heart failure. It is important to take atenolol exactly as prescribed by your doctor to decrease the chance of this happening. If you have a history of heart disease, discuss with your doctor how Act Atenolol may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Act Atenolol, and whether any special monitoring is needed.
Hyperthyroidism: If you have hyperthyroidism (high levels of Thyroid hormones) you should use caution while taking atenolol, as it may reduce the symptoms of this condition, giving a false impression of improvement. Stopping the medication suddenly could worsen this condition.
Kidney Disease: The kidneys are partially responsible for removing Act Atenolol from your body. Kidney disease or reduced kidney function may cause Act Atenolol to build up in the body, causing side effects. If you have reduced kidney function or kidney disease, discuss with your doctor how Act Atenolol may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Act Atenolol, and whether any special monitoring is needed.
Low blood sugar: The signs of low blood sugar may not be as noticeable when taking atenolol. If you have Diabetes and take insulin or other medications that affect insulin levels in the blood, discuss with your doctor how Act Atenolol may affect your medical condition, how your medical condition may affect the dosing and effectiveness of Act Atenolol, and whether any special monitoring is needed. Your doctor will monitor you while you are taking Act Atenolol and may need to adjust the doses of diabetes medications.
Prinzmetal's angina: Atenolol may increase the number and duration of angina attacks in patients with Prinzmetal's angina. If you have this condition, be cautious while taking atenolol. Report unusual chest pain to your doctor as soon as possible.
Severe allergies: If you have allergies severe enough to cause Anaphylaxis (severe allergic reaction) (a severe allergic reaction where swelling of the face, lips, and throat make it difficult to breathe), you should talk to your doctor about what to do if you have an allergic reaction. Atenolol may make it more difficult to treat your allergic reaction with Epinephrine.
Slow heart rate: In general, people with an abnormally slow pulse should not take a beta-blocker such as atenolol.
Stopping usage: Atenolol should not be stopped suddenly. There have been reports of severe worsening of angina and of Heart Attack or abnormal heart rhythms occurring in people with angina pectoris who have done this. If Act Atenolol needs to be stopped, it should be done gradually under supervision of your doctor.
Surgery: If you are scheduled for surgery, inform all doctors involved in your care that you are taking atenolol.
Pregnancy: Studies have shown that atenolol does cross the placenta and there have been reports of harm to the developing baby if atenolol is taken by the mother during pregnancy. Act Atenolol should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking Act Atenolol, contact your doctor immediately.
Breast-feeding: Act Atenolol passes into breast milk. If you are a breast-feeding mother and are taking atenolol, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.
Children: The safety and effectiveness of using Act Atenolol have not been established for children.
Your medication is delivered directly to you at no added cost. We even offer same-day delivery in select locations.
All material © 1996-2021 MediResource Inc. Terms and conditions of use. The contents herein are for informational purposes only. Always seek the advice of your physician or other qualified health providers with any questions you may have regarding a medical condition.
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