Clinical data | |
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Trade names | Tenormin, others |
Other names | ICI-66082; ICI66082 |
AHFS/Drugs.com | Monograph |
MedlinePlus | a684031 |
License data | |
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Routes of administration | Oral, intravenous |
Drug class | Selective β1 receptor antagonist |
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Pharmacokinetic data | |
Bioavailability | 50–60%[2][3] |
Protein binding | 6–16%[4] |
Metabolism | Minimal (~5%)[4][5][6] |
Metabolites | • Hydroxyatenolol[3] • Atenolol glucuronide[3] |
Onset of action | IV : <5 minutes[4] Oral: <1 hour[4] |
Elimination half-life | 6–7 hours[4] |
Duration of action | >24 hours[4] |
Excretion | Oral: urine (40–50%), feces (50%)[3][4] IV : urine (85–100%), feces (10%)[3][4] |
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ECHA InfoCard | 100.044.941 |
Chemical and physical data | |
Formula | C14H22N2O3 |
Molar mass | 266.341 g·mol−1 |
3D model (JSmol) | |
Chirality | Racemic mixture |
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Atenolol is a beta blocker medication primarily used to treat high blood pressure and heart-associated chest pain.[7] Although used to treat high blood pressure, it does not seem to improve mortality in those with the condition.[8][9] Other uses include the prevention of migraines and treatment of certain irregular heart beats.[7][10] It is taken orally (by mouth) or by intravenous injection (injection into a vein).[7][10] It can also be used with other blood pressure medications.[10]
Common side effects include feeling tired, heart failure, dizziness, depression, and shortness of breath.[7] Other serious side effects include bronchial spasm.[7] Use is not recommended during pregnancy[7] and alternative drugs are preferred when breastfeeding.[11] It works by blocking β1-adrenergic receptors in the heart, thus decreasing heart rate, force of heart beats, and blood pressure.[7]
Atenolol was patented in 1969 and approved for medical use in 1975.[12] It is on the World Health Organization's List of Essential Medicines.[13] It is available as a generic medication.[7] In 2022, it was the 63rd most commonly prescribed medication in the United States, with more than 10 million prescriptions.[14][15]
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