Atenolol Medication: Uses, Dosage, Side Effects & Interactions

Key Points About Atenolol Medication

Atenolol is a prescription medication commonly used to treat several heart-related conditions, including high blood pressure (hypertension), chest pain (angina), and irregular heartbeats. It belongs to a class of drugs known as beta-blockers, which work by slowing the heart rate and reducing its workload. Atenolol is also prescribed for preventing migraines and managing anxiety. Always consult your healthcare provider before starting or adjusting your dose.

Names of Atenolol Medication

US Brand Name: Tenormin (Atenolol)

The generic name refers to the active ingredient in the medication. In this case, Atenolol is the generic name, listed in parentheses.

Pharmacologic Category of Atenolol

Beta-Blocker, Beta-1 Selective

Atenolol Dosage and Uses

Atenolol is prescribed for a variety of conditions, with the dosage tailored to each specific condition. Always follow your doctor’s instructions carefully, and if you have any questions about your dose, consult one of our telemedicine providers.

Atenolol for High Blood Pressure (Hypertension)

Initial dose: 25-50 mg once daily. The dose may be increased to 100 mg daily if needed. Your doctor will determine the length of treatment based on how well your blood pressure is controlled.

Atenolol for Angina (Chest Pain)

Initial dose: 50 mg once daily. If necessary, the dose may be increased to 100 mg daily. The duration of treatment will depend on your symptoms and how you respond to the medication.

Atenolol for Heart Attack (Post-Myocardial Infarction)

Initial dose: 100 mg once daily or 50 mg twice daily. Treatment is typically continued long-term to help prevent future heart attacks.

Atenolol for Atrial Fibrillation (Irregular Heartbeat)

Initial dose: 50-100 mg once daily. Your doctor will adjust the dose based on how well your heart rhythm is controlled.

Atenolol for Heart Failure

Initial dose: 25 mg once daily. The dose may be gradually increased up to 100 mg daily, depending on how well you respond to treatment.

Atenolol for Tachycardia (Fast Heart Rate)

Initial dose: 25-50 mg once daily. The dose may be increased to 100 mg daily if needed.

Atenolol for Migraine Prevention

Initial dose: 50 mg once daily. The dose may be increased to 100 mg daily if necessary. The duration of treatment will depend on how well your migraines are controlled.

Atenolol for Anxiety

Initial dose: 25-50 mg once daily. The dose may be increased to 100 mg daily if needed. Your doctor will determine the length of treatment based on your symptoms.

Atenolol for Hyperthyroidism (Overactive Thyroid)

Initial dose: 25-50 mg once daily. The dose may be increased to 100 mg daily if needed. The duration of treatment will depend on your thyroid condition and how you respond to therapy.

Atenolol for Post-Myocardial Infarction (After a Heart Attack)

Initial dose: 100 mg once daily or 50 mg twice daily. Long-term treatment is often recommended to reduce the risk of future heart attacks.

Always consult your healthcare provider before making any changes to your medication. If you have questions or need to speak with a doctor, consider scheduling a telemedicine appointment with one of our providers today.

Atenolol Dosage Forms and Strengths

Tablets: 25 mg, 50 mg, 100 mg

How to Take Atenolol: Administration Instructions

Atenolol should be taken by mouth, with or without food. Try to take it at the same time each day to maintain consistent levels in your body. Swallow the tablet whole with water. Do not crush or chew the tablet. If you miss a dose, take it as soon as you remember. However, if it’s almost time for your next dose, skip the missed dose and continue with your regular schedule. Do not take two doses at the same time.

Contraindications for Atenolol

A contraindication is a specific situation or condition where a medication should not be used because it could cause harm. If you have any of the following conditions, avoid taking Atenolol, as it may worsen your health or increase the risk of serious side effects.

1. Bradycardia (slow heart rate): Atenolol slows the heart rate, so if your heart rate is already low, this medication could make it dangerously slow.
2. Heart block: If you have a condition where the electrical signals in your heart are delayed or blocked, Atenolol can worsen this, leading to serious heart issues.
3. Severe heart failure: Atenolol can reduce the heart’s ability to pump blood, which may be harmful if you already have severe heart failure.
4. Severe asthma or chronic obstructive pulmonary disease (COPD): Atenolol can narrow the airways, making breathing more difficult for people with these conditions.
5. Allergic reactions to beta-blockers: If you have had an allergic reaction to Atenolol or other beta-blockers in the past, you should not take this medication.

Drug to Drug Interactions with Atenolol

Many medications can interact with Atenolol, potentially increasing side effects or reducing its effectiveness. It’s important to inform your healthcare provider about all the medications you are taking, including over-the-counter drugs and supplements. Below are some common medications that may interact with Atenolol:

1. Calcium channel blockers (e.g., Verapamil, Diltiazem): These can further slow your heart rate and lower blood pressure, which may be dangerous when combined with Atenolol.
2. Clonidine (Catapres): Stopping Clonidine suddenly while taking Atenolol can cause a rapid and dangerous increase in blood pressure.
3. Nonsteroidal anti-inflammatory drugs (NSAIDs) (e.g., Ibuprofen, Naproxen): These may reduce Atenolol’s ability to control blood pressure effectively.
4. Amiodarone (Pacerone): Taking Amiodarone with Atenolol can increase the risk of a dangerously slow heart rate.
5. Insulin or oral diabetes medications (e.g., Metformin, Glipizide): Atenolol can mask the symptoms of low blood sugar, making hypoglycemia harder to detect and treat.

Atenolol in Pregnancy: Is It Safe?

Atenolol is generally not recommended during pregnancy, especially in the first and second trimesters. It can reduce blood flow to the placenta, which may affect the baby’s growth and development. If you are pregnant or planning to become pregnant, consult your healthcare provider to discuss safer alternatives. If Atenolol is deemed necessary, your provider will closely monitor both you and your baby throughout the pregnancy.

Is Atenolol Safe While Breastfeeding?

Atenolol can pass into breast milk and may affect a nursing infant, potentially causing a low heart rate or low blood pressure. If you are breastfeeding, it’s important to discuss the risks and benefits of Atenolol with your healthcare provider. They may recommend an alternative medication or suggest monitoring your baby for any potential side effects.

Estimated Cost of Atenolol Medication

The cost of a 30-day supply of Atenolol without insurance can vary depending on the dosage and the pharmacy. However, with a GoodRx coupon, the estimated cost for a 30-day supply of Atenolol (50 mg) typically ranges from $4 to $10. Prices may vary, so it’s a good idea to check with your pharmacy or use a discount program like GoodRx to find the best price.

Possible Alternatives to Atenolol

If Atenolol is not suitable for you, there are several alternatives available for the conditions it treats. Always consult your healthcare provider before making any changes to your treatment plan. Here are some alternatives:

1. Hypertension (high blood pressure): Alternatives include ACE inhibitors (e.g., Lisinopril), ARBs (e.g., Losartan), calcium channel blockers (e.g., Amlodipine), or lifestyle changes such as reducing salt intake, exercising regularly, and managing stress.
2. Angina (chest pain): Other medications include calcium channel blockers, nitrates (e.g., Isosorbide), or lifestyle changes like quitting smoking and improving your diet.
3. Heart attack (myocardial infarction): Alternatives may include ACE inhibitors, statins (e.g., Atorvastatin), or lifestyle changes such as adopting a heart-healthy diet and engaging in regular exercise.
4. Atrial fibrillation: Other treatment options include calcium channel blockers, antiarrhythmic drugs (e.g., Amiodarone), or procedures like cardioversion.
5. Heart failure: ACE inhibitors, ARBs, or diuretics (e.g., Furosemide) may be used as alternatives. Lifestyle changes, such as reducing sodium intake and managing fluid levels, are also important.
6. Tachycardia (fast heart rate): Calcium channel blockers or antiarrhythmic drugs may be used instead of Atenolol. Reducing caffeine and alcohol intake can also help manage symptoms.
7. Migraine prevention: Other options include calcium channel blockers, anticonvulsants (e.g., Topiramate), or lifestyle changes such as identifying and avoiding migraine triggers.
8. Anxiety: Alternatives include selective serotonin reuptake inhibitors (SSRIs) like Sertraline or cognitive-behavioral therapy (CBT). Relaxation techniques such as meditation may also be beneficial.
9. Hyperthyroidism: Antithyroid medications (e.g., Methimazole) or radioactive iodine therapy may be used instead of Atenolol to manage symptoms.
10. Post-myocardial infarction: ACE inhibitors, statins, or lifestyle changes such as maintaining a healthy weight and engaging in regular physical activity may be recommended.

Recent Updates on Atenolol Research

Recent studies have explored the long-term effects of beta-blockers like Atenolol on cardiovascular health. Some research suggests that while Atenolol is effective in reducing blood pressure and preventing heart attacks, it may not be as effective as other beta-blockers in preventing strokes. Additionally, newer studies are investigating the role of beta-blockers in managing anxiety and other non-cardiac conditions. However, more research is needed to confirm these findings. Always discuss any concerns or new research with your healthcare provider.

James Kingsley

Learn More