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Atenolol

Atenolol is a beta blocker taken by mouth as a tablet to treat high blood pressure, long-term angina (chest pain from reduced blood flow to the heart), and to lower the risk of death after a heart attack.

Brand name Tenormin
Drug class Beta-adrenergic Blocker
Rx Form 1
Dr. Brian Staiger, PharmD, BCPS
Reviewed by Last reviewed Jul 10, 2026 Content updated Oct 2, 2026
🧬 Where this information comes from Click to expand

The clinical label records used on this page are FDA-filed Structured Product Labeling (SPL) retrieved through openFDA. We identified 109 clinical label sets within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. Forms, routes, brands, labelers, strengths, and NDC product-record counts are built separately from matching FDA National Drug Code Directory records. The linked DailyMed document is a representative official source for verification, not the page’s only clinical source. View the linked label on DailyMed →

✓No current FDA shortage listed · checked Oct 5, 2026
Atenolol at a glance The quick version — the full detail is in the Patient Information Guide below.
Dr. Brian Staiger, PharmD, BCPS
The Pharmacist’s Take By · Clinical pharmacist · Written

Atenolol (Tenormin) is a once-daily beta blocker that slows the heart and eases its pumping, used for high blood pressure, angina (heart-related chest pain) and after a heart attack; an older standby, around since about 1992 and available as a generic, it is now usually a second choice for blood pressure alone. Most people tolerate it well, noticing mainly tiredness, light-headedness or cold hands and feet. Never stop it suddenly, which can trigger worse angina, a heart attack or dangerous heart rhythms, even if you take it just for blood pressure. Asthma, diabetes, heart failure, thyroid problems and pregnancy all need a check with your prescriber first.

Clinical pearls

  • Atenolol is cleared by the kidneys, so kidney problems can let it build up and may call for a lower dose.
  • With diabetes, atenolol can mask the racing heartbeat of low blood sugar, so watch for sweating, hunger or confusion instead.
  • Taking verapamil or diltiazem alongside atenolol can slow the heart dangerously, so every prescriber should know you take it.
  • Tell your surgeon and anesthesia team you take atenolol before major surgery, rather than stopping it on your own beforehand.
How we write & review this content — our editorial policy →
How you get itPrescription only
Comes asTablet
Earliest FDA record1981
Companies listing it with the FDA32
FDA label last updatedSep 18, 2025
FDA’s strongest warning (boxed)None on the label

Patient information guide A plain-language walkthrough of Atenolol, written from its FDA label.

What Atenolol is used for

▾

Atenolol tablets are used for these conditions:

  • High blood pressure: Tenormin and atenolol tablets lower blood pressure and the risk of strokes and heart attacks.
  • Angina: Tenormin and atenolol tablets are used for long-term management of angina due to coronary atherosclerosis.
  • Acute heart attack: Tenormin and atenolol tablets are used in stable patients with a definite or suspected heart attack to reduce cardiovascular death.

How Atenolol works

▾

Atenolol is a beta-1 selective blocker. It blocks the effects of adrenaline-type chemicals on the heart. This slows the heart rate and lowers blood pressure.

With a lower heart rate and pressure, the heart needs less oxygen at any level of effort, which helps angina. At higher doses atenolol can also block beta-2 receptors in the lungs and blood vessels.

Atenolol dosage

▾

Atenolol tablets are taken by mouth, generally once a day for high blood pressure and angina. For high blood pressure, the full effect usually shows within one to two weeks. Some people with angina need a higher dose.

  • After a heart attack, treatment may start with injections in the hospital, then tablets.
  • Follow your prescriber's directions and the pharmacy label.
  • Do not stop it suddenly.

Dosing details from the FDA-approved label

From the Atenolol prescribing information (“Dosage and Administration”). Doses are set by your prescriber for your product, condition, kidney function and age — never change a dose on your own.

  • Hypertension
    • Initial dose 50 mg given as one tablet a day either alone or added to diuretic therapy
    • If an optimal response is not achieved, increase to 100 mg given as one tablet a day
    • Maximum: Increasing the dosage beyond 100 mg a day is unlikely to produce any further benefit
    • Full effect of the dose usually seen within one to two weeks; renally-impaired or elderly patients may require a lower starting dose of 25 mg given as one tablet a day
  • Angina Pectoris
    • Initial dose 50 mg given as one tablet a day
    • If an optimal response is not achieved within one week, increase to 100 mg given as one tablet a day
    • Some patients may require 200 mg once a day for optimal effect
  • Acute Myocardial Infarction
    • 5 mg intravenously over 5 minutes, followed by another 5 mg intravenous injection 10 minutes later
    • In patients who tolerate the full intravenous dose (10 mg), 50 mg tablet 10 minutes after the last intravenous dose, followed by another 50 mg oral dose 12 hours later
    • Thereafter 100 mg once daily or 50 mg twice a day for a further 6 to 9 days or until discha
    • If I.V. beta-blocker is eliminated, tablets 50 mg twice daily or 100 mg once a day for at least seven days
  • Elderly patients or patients with renal impairment (creatinine clearance 15-35 mL/min/1.73m2)
    • Maximum oral dosage 50 mg daily
    • Maximum: 50 mg daily
    • Dosage should be adjusted in cases of severe impairment of renal function; start at the low end of the dosing range in elderly patients
  • Renal impairment (creatinine clearance below 15 mL/min/1.73m2)
    • Maximum oral dosage 25 mg daily
    • Maximum: 25 mg daily
    • Atenolol elimination half-life 27 h
  • Patients on hemodialysis
    • 25 mg or 50 mg after each dialysis
    • Should be done under hospital supervision as marked falls in blood pressure can occur
Read the label’s full dosing text

DOSAGE AND ADMINISTRATION Hypertension The initial dose of atenolol is 50 mg given as one tablet a day either alone or added to diuretic therapy. The full effect of this dose will usually be seen within one to two weeks. If an optimal response is not achieved, the dosage should be increased to atenolol 100 mg given as one tablet a day. Increasing the dosage beyond 100 mg a day is unlikely to produce any further benefit. Atenolol tablets may be used alone or concomitantly with other antihypertensive agents including thiazide-type diuretics, hydralazine, prazosin, and alpha-methyldopa. Angina Pectoris The initial dose of atenolol is 50 mg given as one tablet a day. If an optimal response is not achieved within one week, the dosage should be increased to atenolol 100 mg given as one tablet a day. Some patients may require a dosage of 200 mg once a day for optimal effect. Twenty-four hour control with once daily dosing is achieved by giving doses larger than necessary to achieve an immediate maximum effect. The maximum early effect on exercise tolerance occurs with doses of 50 mg to 100 mg, but at these doses the effect at 24 hours is attenuated, averaging about 50% to 75% of that observed with once a day oral doses of 200 mg. Acute Myocardial Infarction In patients with definite or suspected acute myocardial infarction, treatment with atenolol I.V. injection should be initiated as soon as possible after the patient’s arrival in the hospital and after eligibility is established. Such treatment should be initiated in a coronary care or similar unit immediately after the patient’s hemodynamic condition has stabilized. Treatment should begin with the intravenous administration of 5 mg atenolol over 5 minutes followed by another 5 mg intravenous injection 10 minutes later. Atenolol I.V. injection should be administered under carefully controlled conditions including monitoring of blood pressure, heart rate, and electrocardiogram. Dilutions of atenolol I.V. injection in Dextrose Injection USP, Sodium Chloride Injection USP, or Sodium Chloride and Dextrose Injection may be used. These admixtures are stable for 48 hours if they are not used immediately. In patients who tolerate the full intravenous dose (10 mg), atenolol tablets 50 mg should be initiated 10 minutes after the last intravenous dose followed by another 50 mg oral dose 12 hours later.

Excerpted — the section continues on the label. Read the full Dosage and Administration section on DailyMed →

Atenolol side effects

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Most side effects are mild and short-lived. Common ones include:

Common side effects

  • Tiredness or fatigue
  • Dizziness or light-headedness
  • Cold hands and feet
  • Slow heartbeat (bradycardia)
  • Nausea
  • Diarrhea
  • Depression
  • Shortness of breath

When to get medical help

  • Call your doctor right away if you notice signs of heart failure, such as new swelling, unusual shortness of breath or worsening breathlessness.
  • Get help if your angina gets worse, you have chest pain, or you have a very fast, irregular or very slow heartbeat, especially after stopping atenolol.
  • Seek care for fainting, or severe dizziness or low blood pressure.
  • Get medical help for wheezing or trouble breathing.
  • Tell your doctor about fever with aching and sore throat, a new skin rash, or a worsening of psoriasis.
  • Report mood changes, confusion, hallucinations or memory loss.
  • Call poison control or emergency services if you take too much.

Atenolol warnings and precautions

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  • Do not stop suddenly. Abrupt stopping can cause worse angina, heart attack and dangerous heart rhythms.
  • Heart failure: beta blockers can weaken the heart's pumping. Atenolol is not for overt heart failure.
  • Lung disease: people with bronchospastic disease generally should not take beta blockers. Atenolol may be used with caution if other treatments fail.
  • Diabetes: it may mask a fast heartbeat from low blood sugar. Dizziness and sweating still occur.
  • Thyroid: it may mask signs of an overactive thyroid.
  • Surgery: it should not routinely be stopped before major surgery.

Atenolol interactions

▾

Atenolol can clash with several heart and blood pressure medicines.

  • Verapamil or diltiazem: risk of slow heartbeat and heart block.
  • Reserpine: added drop in blood pressure and heart rate.
  • Disopyramide or amiodarone: risk of severe slow heartbeat or heart failure.
  • Clonidine: rebound high blood pressure if stopped while on a beta blocker.
  • Indomethacin-type drugs: may weaken the blood pressure effect.
  • Digoxin: greater risk of slow heartbeat.
  • Epinephrine: may work poorly in severe allergic reactions.

Interactions listed in the FDA-approved label

From the Atenolol prescribing information (“Drug Interactions”): what the manufacturer studied or reported to the FDA.

  • Catecholamine-depleting drugs (e.g., reserpine): May have an additive effect when given with beta-blocking agents, with hypotension and/or marked bradycardia that may produce vertigo, syncope, or postural hypotension. Closely observe patients for evidence of hypotension and/or marked bradycardia.
  • Calcium channel blockers: May also have an additive effect when given with atenolol tablets. See WARNINGS.
  • Disopyramide: Has been associated with severe bradycardia, asystole and heart failure when administered with beta-blockers.
  • Amiodarone: Negative chronotropic properties may be additive to those seen with beta-blockers.
  • Clonidine: Beta-blockers may exacerbate the rebound hypertension which can follow the withdrawal of clonidine. If coadministered, withdraw the beta-blocker several days before the gradual withdrawal of clonidine; if replacing clonidine with a beta-blocker, delay introduction of the beta-blocker for several days after clonidine has stopped.
  • Prostaglandin synthase inhibiting drugs (e.g., indomethacin): May decrease the hypotensive effects of beta-blockers.
  • Aspirin: Information on concurrent use is limited; data from TIMI-II and ISIS-2 currently do not suggest any clinical interaction between aspirin and beta-blockers in the acute myocardial infarction setting.
  • Allergens (patients with history of anaphylactic reaction): While taking beta-blockers, such patients may have a more severe reaction on repeated challenge and may be unresponsive to the usual doses of epinephrine.
  • Digitalis glycosides: Both slow atrioventricular conduction and decrease heart rate; concomitant use can increase the risk of bradycardia.
Read the label’s full interactions text

Drug Interactions Catecholamine-depleting drugs (e.g., reserpine) may have an additive effect when given with beta-blocking agents. Patients treated with atenolol tablets plus a catecholamine depletor should therefore be closely observed for evidence of hypotension and/or marked bradycardia which may produce vertigo, syncope, or postural hypotension. Calcium channel blockers may also have an additive effect when given with atenolol tablets (see WARNINGS ). Disopyramide is a Type I antiarrhythmic drug with potent negative inotropic and chronotropic effects. Disopyramide has been associated with severe bradycardia, asystole and heart failure when administered with beta-blockers. Amiodarone is an antiarrhythmic agent with negative chronotropic properties that may be additive to those seen with beta-blockers. Beta-blockers may exacerbate the rebound hypertension which can follow the withdrawal of clonidine. If the two drugs are coadministered, the beta-blocker should be withdrawn several days before the gradual withdrawal of clonidine. If replacing clonidine by beta-blocker therapy, the introduction of beta-blockers should be delayed for several days after clonidine administration has stopped. Concomitant use of prostaglandin synthase inhibiting drugs, e.g., indomethacin, may decrease the hypotensive effects of beta-blockers. Information on concurrent usage of atenolol and aspirin is limited. Data from several studies, i.e., TIMI-II, ISIS-2, currently do not suggest any clinical interaction between aspirin and beta-blockers in the acute myocardial infarction setting. While taking beta-blockers, patients with a history of anaphylactic reaction to a variety of allergens may have a more severe reaction on repeated challenge, either accidental, diagnostic or therapeutic. Such patients may be unresponsive to the usual doses of epinephrine used to treat the allergic reaction.

Excerpted — the section continues on the label. Read the full Drug Interactions section on DailyMed →

Not a complete list. The label covers the interactions the manufacturer studied or reported, and our own interaction database does not cover every medicine either. Bring your full medication list, including vitamins and herbal products, to your pharmacist.

🌿143 supplements and herbs with documented Atenolol interactions, ranked by severity Check Atenolol against a supplement or herb →

Before taking Atenolol

▾
  • Do not use with a very slow heartbeat, heart block beyond first degree, cardiogenic shock or overt heart failure.
  • Do not use with a past allergic reaction to atenolol or its ingredients.
  • Do not use with untreated pheochromocytoma.
  • Use caution with asthma or other bronchospastic lung disease, diabetes and thyroid disease.
  • Pregnancy: atenolol can cause fetal harm, including small-for-gestational-age babies. Newborns exposed near delivery or through breastfeeding may have low blood sugar and a slow heartbeat.
  • Kidney problems: atenolol can build up when kidney function is low.

Atenolol overdose

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An overdose can cause tiredness, breathing problems, wheezing, a very slow heartbeat, low blood pressure, heart failure and low blood sugar. Get emergency help right away. Treatment in hospital may include removing unabsorbed drug, medicines for the heart and breathing, and dialysis, which can remove atenolol.

What Atenolol does in the body

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Atenolol lowers resting and exercise heart rate and blood pressure. Its beta-blocking effect starts within about an hour, peaks at about 2 to 4 hours and lasts at least 24 hours. It slows signals through the heart's natural pacemaker and the AV node. Going above the usual top dose does not add more blood pressure lowering.

How your body processes Atenolol

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About half of an oral dose is absorbed, and blood levels peak 2 to 4 hours after a dose. Atenolol is barely broken down by the liver and is cleared mostly by the kidneys. Its half-life is about 6 to 7 hours. It builds up when kidney function is reduced.

How to store Atenolol

▾

Store at 20° to 25°C (68° to 77°F). Dispense in a tight, light-resistant container as defined in the USP using a child-resistant closure.

Written from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →

143

Supplements & herbs that interact with Atenolol

143 supplements and herbal products have documented interactions with Atenolol in the licensed clinical database we use. Most are manageable — but your pharmacist should know about everything you take, including vitamins and herbals.

Severity mix
  • Major · 5
  • Moderate · 118
  • Minor · 20
ACTIVATED CHARCOAL Major AMERICAN HELLEBORE Major AMERICAN MISTLETOE Major INDIAN SNAKEROOT Major TYRAMINE Major ADRAFINIL Moderate AGMATINE Moderate ALGAL OIL Moderate +135 more
Every supplement checked against Atenolol — ranked by severity The full interaction hub: 5 major · 118 moderate · 20 minor · every one linked to its full report. Check Atenolol against your exact supplements

Educational information from a licensed clinical database (Natural Medicines) — see our data sources & update cadence. Not medical advice: an interaction being documented does not mean it will happen to you; do not start or stop medications or supplements without professional guidance.

1

Nutrient depletion considerations

Atenolol has been associated with lower levels of 1 nutrient in the clinical literature. This does not mean a deficiency will occur — it means these may be worth discussing with your pharmacist or healthcare provider, especially with long-term use.

COENZYME Q10 Insufficient Evidence
See the full Atenolol nutrient depletion report

Educational information from a licensed clinical database (Natural Medicines) — not medical advice. Do not start or stop medications or supplements without professional guidance.

Atenolol: pharmacist answers to common questions

Quick, plain-English answers to the questions patients ask most about Atenolol — the kind of thing our pharmacy team would talk through with you at the counter.

What is atenolol for?

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It treats high blood pressure and helps manage long-term angina. It is also used in people who are stable after a definite or suspected heart attack to lower the risk of death from heart causes.

How should I take it?

▾
Atenolol tablets are swallowed by mouth, usually once a day. Take it as your prescriber and the label direct. Your doctor may adjust the dose based on how you respond.

Can I stop it if I feel fine?

▾
Please don't stop it suddenly. Stopping abruptly can make angina worse and has led to heart attacks and dangerous heart rhythms. Talk to your doctor first so they can guide you.

What side effects should I expect?

▾
Tiredness, dizziness, cold hands and feet, and a slower heartbeat are the more common ones. Most are mild and pass. Call your doctor for fainting, wheezing, swelling, worsening breathlessness or mood changes.

Do I need to watch out for other medicines?

▾
Yes. Tell me about any heart rhythm drugs, verapamil, diltiazem, clonidine, digoxin or anti-inflammatory pain relievers like indomethacin. Some can cause a very slow heartbeat or change how atenolol works.

Is atenolol safe in pregnancy?

▾
It can harm an unborn baby, and babies born to mothers taking it may be small for their age. Tell your doctor right away if you are pregnant or planning to be, or if you are breastfeeding.

Is Atenolol available over the counter?

▾
No. Atenolol is a prescription medicine: every Atenolol product listed with the FDA is prescription only, so it is not sold over the counter. Your prescriber decides whether it is appropriate for you, and your pharmacist dispenses it.

When was Atenolol first available?

▾
The earliest FDA record we hold for Atenolol is from 1981: its first approval in Drugs@FDA or its earliest product listing in the NDC Directory, whichever is older. Many older medicines were in use before their first formal FDA approval, so this is the earliest date on record, not necessarily when Atenolol was first used.

Who makes Atenolol?

▾
32 companies currently list Atenolol products in the FDA's NDC Directory, including A-S Medication Solutions, Bryant Ranch Prepack, NuCare Pharmaceuticals,Inc.. That count includes repackagers and distributors as well as manufacturers (companies that sell only the raw ingredient are not counted), so fewer companies actually make it; the label on your bottle names the one that supplied yours.

Answers drafted from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →

More about Atenolol on HelloPharmacist

📊Atenolol supplement interactions143 checked — ranked by severity 🌿Drug & Supplement CheckerAtenolol vs. vitamins & herbs 💬Ask a PharmacistFree answer, usually < 24h 🔎NDC & pricing lookupFind Atenolol NDCs & costs 🅰️Browse Drugs A–ZLook up any medication
Detailed data & references for Atenolol Forms & strengths, pricing, billing codes, manufacturers, safety reports and sourcing — the data behind the page. Most people can stop here. Each section below opens on a tap.

Atenolol forms and strengths (how it comes)

Atenolol is available in 1 form. Different forms and brands can have different approved uses, doses, schedules, and directions. Follow the instructions for your exact product, and do not switch forms without guidance from your prescriber or pharmacist.

Tablet

By mouth
Brands Tenormin
How this form is used
What it may be used for
  • Tenormin tablets are used for high blood pressure, long-term angina and acute heart attack.
  • Atenolol tablets are used for high blood pressure, long-term angina and acute heart attack.
Important instructions
  • Tenormin tablets for high blood pressure or angina are taken as one tablet once a day.
  • Atenolol tablets for high blood pressure or angina are taken as one tablet once a day.
  • Tenormin and atenolol tablets for a heart attack may follow hospital-given IV injections, per the prescriber.
Available strengths 3 strengths
25 mg 50 mg 100 mg
262 FDA-listed product records ⓘ

Atenolol on the U.S. market: products, makers and brands

How Atenolol appears in the FDA’s National Drug Code Directory — including its dosage forms, strengths, brand names, manufacturers, and FDA-listed product records. These are directory records, not sales or prescription volume.

32 companies list 129 Atenolol product records with the FDA, mostly as tablet; the earliest marketing or approval year on record is 1981. Brand names on the directory include Tenormin; the rest are generics.

1
Dose forms ⓘ
32
Labelers (makers, repackagers, distributors)
3
Brand names
129
FDA-listed product records ⓘ
1981
Earliest FDA record ⓘ

Also listed with the FDA, not a patient dose form: Powder (7) — bulk drug substance sold to compounders/manufacturers and multi-item kits. These aren’t counted in the dose-form total above.

A-S Medication Solutions11%
Bryant Ranch Prepack9%
NuCare Pharmaceuticals,Inc.8%
Preferred Pharmaceuticals Inc.5%
Northwind Health Company, LLC5%
Aphena Pharma Solutions - Tennessee, LLC4%
Other makers58%

Share of FDA-listed product records by manufacturer — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

How widely Atenolol is used (Medicaid data)

A general measure of how commonly Atenolol is prescribed, based on Medicaid — one of the largest public drug programs. The figure below is prescriptions filled in Q1–Q4 2025, summed across every form and brand of the drug.

Think of this as a proxy for how widely Atenolol is used, drawn from freely available public data. Medicaid is just one program — these numbers don’t include Medicare, other government coverage, or commercial and cash-pay prescriptions, so real-world use is higher than what’s shown here.

765,683
Medicaid prescriptions filled (Q1–Q4 2025)
$6.8M gross Medicaid reimbursement (before mandatory rebates — net cost is lower)

How commonly is Atenolol prescribed? Of the 1,601 medications we measure, Atenolol ranks #206 by Medicaid prescriptions — more than 87% of them.

Where Atenolol ranks among the drugs we measure · Q1–Q4 2025 · neighbors ±5
Total prescriptions — #206 of 1,601
#201 Medroxyprogesterone In... 789,786 Rx #202 Bictegravir, Emtricita... 772,594 Rx #203 Desvenlafaxine 769,380 Rx #204 Fexofenadine 767,005 Rx #205 Fluticasone, Umeclidin... 766,474 Rx #206 Atenolol 765,683 Rx #207 Calcium Chloride / Pot... 764,836 Rx #208 Dupilumab Injection 758,467 Rx #209 Rizatriptan 745,530 Rx #210 Tiotropium Oral Inhala... 739,246 Rx #211 Lacosamide 735,538 Rx

Utilization by Atenolol product

Pick a product to see its own Medicaid numbers. Each chip is one clinical product — a specific strength & dosage form as defined by RxNorm — with brand-name and generic versions combined.

The 25 mg oral tablet is the most-dispensed Atenolol product — about 48% of these Medicaid prescriptions.

atenolol 25 MG Oral Tablet Most dispensed

369,860 Medicaid prescriptions (Q1–Q4 2025) 48% of Atenolol prescriptions shown $3.2M gross reimbursement (before rebates) ≈ $8.59 per prescription (gross)

Summed across the 15 of 211 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 197380

atenolol 50 MG Oral Tablet

302,952 Medicaid prescriptions (Q1–Q4 2025) 40% of Atenolol prescriptions shown $2.7M gross reimbursement (before rebates) ≈ $8.93 per prescription (gross)

Summed across the 14 of 222 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 197381

atenolol 100 MG Oral Tablet

92,871 Medicaid prescriptions (Q1–Q4 2025) 12% of Atenolol prescriptions shown $879,556 gross reimbursement (before rebates) ≈ $9.47 per prescription (gross)

Summed across the 12 of 144 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 197379

Shares are of the Medicaid prescriptions shown here. Product grouping follows RxNorm (the National Library of Medicine’s drug terminology), so “one product” means one strength & dosage form regardless of manufacturer. Dollar figures are gross Medicaid reimbursement before mandatory rebates — rebates (often large, especially for brand-name drugs) are confidential, so actual net cost to Medicaid is lower than shown.

Source: Medicaid State Drug Utilization Data (CMS), aggregated by generic ingredient — summed across every NDC (all brands, strengths, salt forms and dosage forms) of Atenolol, and across all states and both fee-for-service and managed-care claims. A general popularity signal; it excludes Medicare, commercial insurance and cash prescriptions, so it is not total U.S. use. Based on the 41 of 577 listed Atenolol NDCs with Medicaid activity.

Compare Atenolol products

A representative set of FDA-listed product records for Atenolol — across manufacturers, strengths, and dosage forms, grouped by form with each product’s manufacturer and how the FDA approved it. The same medicine may be made and packaged by different companies, so a single drug can have many directory entries. (It’s also why a refill can look different — a new shape, color, or box — even though it contains the same medication.)

Showing 104 of 129 products — FDA National Drug Code Directory. See every product, package size and price: browse all 129 Atenolol NDCs →

Atenolol recall history

A recall is when a specific batch of a medicine is pulled from the market — usually a manufacturing issue, not a problem with the drug itself. Class I is most serious, Class III least.

The FDA’s enforcement reports list one Atenolol recall since July 2021. It is no longer listed as ongoing. A recall names specific lots from one company, so check the lot number on your own bottle rather than assuming every product is affected; your pharmacist can check whether your supply came from an affected lot.

Class I Sep 29, 2022 · Terminated · Golden State Medical Supply Inc.
Label Mix - up; a bottle labeled as Atenolol 25mg Tablets contained Clopidogrel 75mg Tablets
  • Atenolol Tablets, USP, 25 mg, 1000-count bottle, Rx only, Manufactured by: ALPHAPHARM PTY LTD, Marketed by: GSMS, Incorporated, Camarillo, CA 93012, USA, NDC 60429-027-10 Lots: Lot #: GS046745, Exp 12/2023 FDA record D-0019-2023 →

Source: FDA enforcement (recall) reports, via openFDA; our copy was last updated Sep 24, 2026.

RxNorm Concept Web — From Ingredient to Every Form and Strength

This page starts with one ingredient concept (IN). The branches below show its dose-form concepts (SCDF), then the available clinical drug and strength concepts (SCD). Combination products remain separate concepts with their own pages.

Ingredient (IN) Atenolol RxCUI 1202 3 dose forms · 5 strengths
  1. Dose form (SCDF) Injectable Solution RxCUI 370960 No current FDA listing
    Clinical drug / strength (SCD) 0.5 MG/ML RxCUI 104308
  2. Dose form (SCDF) Oral Solution RxCUI 756436 No current FDA listing
    Clinical drug / strength (SCD) 5 MG/ML RxCUI 755528
  3. Dose form (SCDF) Oral Tablet RxCUI 370619 In current FDA listings
    Clinical drug / strength (SCD) 25 MG RxCUI 197380 50 MG RxCUI 197381 100 MG RxCUI 197379

Look up RxCUI 1202 in the RxCUI Atlas →

RxNorm is the U.S. National Library of Medicine’s normalized drug vocabulary. Its concept hierarchy can include forms that are not currently marketed; the status on each branch compares that concept with current FDA listings. RxCUIs identify vocabulary concepts, not individual packages or manufacturers.

💵 What Atenolol costs pharmacies (NADAC benchmark)

The national average invoice price pharmacies pay for the drug itself, from CMS's NADAC survey (data as of Sep 30, 2026). This is a supply-cost benchmark — not a retail price and not what you'd pay at the counter.

FormStrengthPharmacy acquisition benchmark
Tablet · Oral 50 mg $0.024 per tablet NDC details & price history
Tablet · Oral 25 mg $0.022 per tablet NDC details & price history
Tablet · Oral 100 mg $0.036 per tablet NDC details & price history
Tablet 25 mg $0.022 per tablet NDC details & price history
Tablet 50 mg $0.024 per tablet NDC details & price history
Tablet 100 mg $0.036 per tablet NDC details & price history
Why show this? Your out-of-pocket cost depends on insurance, pharmacy markup, and discounts — but the acquisition benchmark tells you whether the medication itself is inexpensive or costly, which strengths cost more per dose, and whether a cash-price quote is in a reasonable range. Each row links to the NDC-level record with its full price history.

Source: CMS National Average Drug Acquisition Cost (NADAC), a survey of retail pharmacy invoice prices. Benchmarks shown are the range across package sizes of a representative product for each form and strength — other manufacturers' products may differ.

Atenolol brand names

Atenolol is sold under one brand name in the FDA directory — Tenormin. A brand and its generic contain the same active ingredient; the brand name belongs to one company's product.

Tenormin

Who makes Atenolol: manufacturers and labelers

32 companies list Atenolol products with the FDA. By number of product records, the largest are A-S Medication Solutions, Bryant Ranch Prepack, NuCare Pharmaceuticals,Inc.. Labelers include manufacturers and repackagers; the product in your bottle depends on which one your pharmacy stocks.

A-S Medication Solutions 14 Bryant Ranch Prepack 12 NuCare Pharmaceuticals,Inc. 10 Preferred Pharmaceuticals Inc. 7 Northwind Health Company, LLC 6 Aphena Pharma Solutions - Tennessee, LLC 5 Proficient Rx LP 5 PD-Rx Pharmaceuticals, Inc. 4 Remedyrepack Inc. 4 St. Mary's Medical Park Pharmacy 4 direct rx 4 Asclemed Usa Inc. 3 Aurobindo Pharma Limited 3 Cardinal Health 107, LLC 3 Coupler LLC 3 Golden State Medical Supply, Inc. 3 Ipca Laboratories Limited 3 Mylan Institutional Inc. 3 Mylan Pharmaceuticals Inc. 3 QPharma, Inc. 3 Rising Pharma Holdings, Inc. 3 Safecor Health, LLC 3 Teva Pharmaceuticals USA, Inc. 3 Unichem Pharmaceuticals (USA), Inc. 3

…and 8 more on the FDA NDC directory.

Atenolol drug class (RxNorm)

Atenolol belongs to the beta-Adrenergic Blocker class.

Pharmacologic class beta-Adrenergic Blocker
Drug family (ATC) Beta blocking agents, selective, Beta blocking agents and calcium channel blockers
How it works Adrenergic beta-Antagonists

Classified by RxNorm RxClass — the U.S. National Library of Medicine's standardized drug-classification service (Established Pharmacologic Class from the FDA, the ATC drug family from the WHO, and mechanism of action). Reference only, not medical advice.

Sources for this Atenolol page

Core label, product, RxNorm, safety, and utilization data on this page come from the sources identified below. AI-written, editorial, and licensed sections are labeled separately.

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FDA-filed drug labels (SPL) Uses, dosing, warnings & side effects from SPL records retrieved through openFDA; the linked representative set can be verified on DailyMed. ✓ Linked label effective Sep 18, 2025
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Forms, brands & labelersAggregated from ingredient-matched FDA National Drug Code Directory product records for Atenolol.
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Real-world reportsThe FDA Adverse Event Reporting System (FAERS), served through openFDA.
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Recalls & shortagesopenFDA drug-enforcement reports and the FDA drug-shortage database.
🧾 Clinical label set — FDA-filed SPL labels retained for Atenolol after exact ingredient or ingredient-combination matching and applicable route/form matching
Clinical labels in scope
109
Finished products in the current FDA directory
129
Companies listing them (makers, repackagers, distributors)
32
FDA labeler codes behind them ⓘ
37
Linked representative label ⓘ
Upsher-Smith Laboratories, LLC
Linked label effective
Sep 18, 2025
Composite sections available
17
Linked SPL Set ID
6e850b1e-28a4-4ff8-8ed7-bb0b29faa28a
Linked SPL Document ID
c804fa73-5b5a-4e20-a1f5-6a13155df21f
Open the linked representative label on DailyMed ↗

How this page is built

HelloPharmacist combines public FDA and NLM records and does not author the underlying clinical facts. The plain-language sections are written with AI from the FDA-approved label text and reviewed by our pharmacy team before publication. Upsher-Smith Laboratories, LLC is the representative DailyMed label linked for verification and dates. This is general education, not medical advice: always talk to your doctor or pharmacist about your own medicines. How we build and review drug pages →