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Tenormin contains the active ingredient atenolol. It is a prescription medication used to treat high blood pressure, manage certain types of chest pain, and reduce cardiovascular risk after a heart attack.
Tenormin is used to treat high blood pressure (hypertension).
High blood pressure means the force of blood against the walls of the arteries stays higher than normal over time.
Lowering blood pressure can help reduce the risk of serious cardiovascular problems, including stroke and heart attack. Tenormin may be used alone or together with other blood pressure medications.
Tenormin is also used for the long-term management of angina pectoris, which is chest pain caused by reduced blood flow to the heart muscle.
By slowing the heart rate and reducing how hard the heart has to work, Tenormin can lower the heart’s need for oxygen and help reduce episodes of angina.
Tenormin may be used in certain patients with a definite or suspected acute myocardial infarction, or heart attack.
In people who are hemodynamically stable, atenolol may help reduce cardiovascular mortality when treatment is started as soon as the patient’s condition allows.
Tenormin belongs to a group of medications called beta blockers.
Atenolol mainly blocks beta-1 receptors in the heart. These receptors normally respond to stress hormones such as adrenaline.
Blocking these effects helps:
By making the heart beat more slowly and with less force, Tenormin reduces strain on the cardiovascular system.
This can help control blood pressure, reduce angina symptoms, and support treatment after certain heart attacks.
Tenormin may be used as a long-term medication for high blood pressure or angina.
It helps control these conditions but does not cure them.
Continue taking Tenormin as prescribed even if you feel well, and do not stop it suddenly without speaking with your healthcare provider.
Tenormin is taken by mouth, usually once daily, exactly as prescribed by your healthcare provider.
You may take Tenormin with or without food, but try to take it the same way each day.
Take your dose at about the same time every day to help maintain a steady effect.
For hypertension:
Starting dose: 50 mg once daily.
The full blood-pressure-lowering effect may take about 1 to 2 weeks to develop.
If your blood pressure is not adequately controlled, your healthcare provider may increase the dose to:
Recommended maximum dose: 100 mg once daily.
Doses above 100 mg per day generally do not provide additional blood-pressure-lowering benefit.
For angina:
Starting dose: 50 mg once daily.
If your symptoms are not adequately controlled after about 1 week, your healthcare provider may increase the dose to:
Usual dose: 100 mg once daily.
Some people may require up to 200 mg once daily for adequate angina control.
Atenolol is removed mainly through the kidneys.
People with reduced kidney function may need a lower dose.
For some older adults or people with kidney impairment who are being treated for hypertension, a starting dose of 25 mg once daily may be considered.
Your healthcare provider may monitor your kidney function and adjust your dose if needed.
Take Tenormin every day as prescribed, even if you feel well.
High blood pressure may not cause noticeable symptoms, and angina may improve before the underlying heart condition is fully controlled.
Do not increase, decrease, or stop your dose without speaking with your healthcare provider.
If you miss a dose of Tenormin, take it when you remember unless it is almost time for your next scheduled dose.
If your next dose is approaching, skip the missed dose and continue with your regular schedule.
Do not take two doses at the same time to make up for a missed dose.
Do not suddenly stop taking Tenormin, especially if you have angina or coronary artery disease.
Stopping atenolol abruptly may worsen chest pain and can increase the risk of serious heart problems.
Your healthcare provider may gradually reduce your dose when treatment needs to be stopped.
Your healthcare provider may monitor your:
Contact your healthcare provider if you develop severe dizziness, fainting, an unusually slow heartbeat, worsening chest pain, or other concerning symptoms.
Tenormin (Atenolol) is available in the following forms and strength:
Apple juice and orange juice may reduce how much atenolol your body absorbs, which could make Tenormin less effective.
It may be best to take Tenormin with water and avoid taking it at the same time as large amounts of apple or orange juice.
Ask your healthcare provider or pharmacist whether you should separate these drinks from your dose.
If you have diabetes, use Tenormin with caution.
Atenolol can hide some warning signs of low blood sugar, particularly a fast heartbeat. This can make hypoglycemia more difficult to recognize.
Continue checking your blood sugar as recommended and watch for other symptoms such as sweating, dizziness, hunger, weakness, or confusion.
Do not suddenly stop taking Tenormin without speaking with your healthcare provider.
Stopping atenolol abruptly may worsen chest pain and can increase the risk of serious heart problems, especially if you have coronary artery disease.
Your healthcare provider may gradually reduce your dose when treatment needs to be stopped.
Alcohol may increase dizziness, lightheadedness, or low blood pressure while you are taking Tenormin.
If you drink alcohol, ask your healthcare provider whether it is safe and how much may be appropriate for you.
Atenolol mainly affects beta-1 receptors in the heart, but it can still affect the airways in some people.
Tell your healthcare provider if you have:
Your healthcare provider will determine whether Tenormin is appropriate and may monitor you more closely.
Tell your healthcare provider if you have heart failure, a very slow heartbeat, heart block, or another heart rhythm problem.
Because Tenormin slows the heart rate and reduces the heart’s workload, it may not be appropriate for everyone with certain heart conditions.
Contact your healthcare provider if you develop fainting, worsening shortness of breath, swelling, or an unusually slow heartbeat.
Tenormin can cause dizziness, lightheadedness, or tiredness, especially when treatment is first started or the dose is changed.
Stand up slowly from a sitting or lying position.
Avoid driving, operating machinery, or doing other activities that require full alertness until you know how Tenormin affects you.
Tenormin can interact with other medications.
Tell your healthcare provider about all prescription medications, over-the-counter products, vitamins, supplements, and herbal products you use.
Particular caution may be needed with:
Do not start, stop, or change another medication without first checking with your healthcare provider or pharmacist.
Atenolol is removed mainly through the kidneys.
If you have reduced kidney function, the medication may remain in your body longer and increase the risk of side effects.
Your healthcare provider may need to lower your dose or change how often you take Tenormin.
Your healthcare provider may monitor your blood pressure, heart rate, kidney function, and blood sugar during treatment.
Regular monitoring helps determine whether Tenormin remains safe and effective for you.
Tenormin begins affecting the heart and blood pressure within a few hours after a dose. Atenolol usually reaches its highest blood level about 2 to 4 hours after taking it. However, when it is used for high blood pressure, it may take about 1 to 2 weeks to see the full blood-pressure-lowering effect. Continue taking Tenormin every day as prescribed, even if you do not notice an immediate difference.
Weight gain is not considered one of the most common side effects of Tenormin, although some people taking beta blockers may notice a small increase in weight. Sudden or unexplained weight gain can sometimes be related to fluid retention, especially in people with heart problems. Contact your healthcare provider if you develop rapid weight gain, swelling in your legs or ankles, or shortness of breath.
No. Do not stop taking Tenormin suddenly unless your healthcare provider specifically tells you to. Abruptly stopping atenolol can worsen chest pain and may increase the risk of serious heart problems, including a heart attack, particularly in people with coronary artery disease. If Tenormin needs to be stopped, your healthcare provider may gradually reduce your dose.
Tenormin can begin lowering blood pressure within hours of taking a dose, but the full effect usually develops gradually. For hypertension, the maximum response to a particular dose may take about 1 to 2 weeks. Your healthcare provider may monitor your blood pressure during this period before deciding whether your dose needs to be adjusted.
| Generic name: | Atenolol |
|---|---|
| Formulation: | Tablet |
| Strength(s): | 25mg, 50mg, 100mg |
| Quantities Available: | 84, 100 |
Our online Canadian Pharmacy is known for high standards of quality, safety, and efficiency when it comes to medications.
Our pharmacy offers lower prices on prescription drugs compared to traditional pharmacies.
When ordering Tenormin (atenolol) from a Canadian pharmacy, you can typically purchase up to a 90-day supply at one time, which is common for prescription medications to ensure adequate management of chronic conditions without frequent refills.
Here’s what you need to know:
Dosage and Quantity: Tenormin is commonly prescribed in dosages of 25 mg, 50 mg, or 100 mg, taken once daily. For a 90-day supply, this means you would order 90 tablets (90 days x 1 tablet per day).
Yes, we sell atenolol on our website. You can enjoy low prices when you order through us. To purchase atenolol, you will need a valid prescription from your healthcare provider. We require this prescription to dispense the medication safely and appropriately. You have the option to submit your prescription by mailing it to us, faxing it, or uploading it through your online account.
Yes, we ship Tenormin (atenolol) to both the United States and Puerto Rico.
Watch how Online Pharmacies Canada is helping customers save money on their medications.
Online Pharmacies Canada has provided information from third parties intended to increase awareness and does not contain all the information about Tenormin (Atenolol). Talk to your doctor or other qualified medical practitioners for medical attention or advice, or if you have any concerns about Tenormin (Atenolol).
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