Brand Name
ratio-Atenolol
Common Name
atenolol
In this drug factsheet:
DIN (Drug Identification Number)| 02171805 | RATIO-ATENOLOL 100MG TABLET |
| 02171791 | RATIO-ATENOLOL 50MG TABLET |
How does this medication work? What will it do for me?
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.
Your doctor may have suggested this medication for conditions other than the ones listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.
Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.
How should I use this medication?
The recommended adult dose of atenolol ranges from 50 mg to 100 mg once daily depending on circumstances. People with reduced kidney function may need a lower dose of 50 mg every other 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 or add another blood pressure-lowering medication. If satisfactory results are not seen within 1 week for treatment of angina, your doctor may increase the dose of atenolol.
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 that this medication be taken as prescribed by your doctor.
It is important that this medication be taken 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.
Store this medication 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.
What form(s) does this medication come in?
50 mg
Each white, round, biconvex tablet, engraved with "rphA52" on one side and bisected on the other side, contains atenolol 50 mg. Nonmedicinal ingredients: hydroxypropyl methylcellulose, macrogol/PEG, magnesium stearate, magnesium trisilicate, microcrystalline cellulose, polydextrose, polyethylene glycol, polyvinyl alcohol, sodium croscarmellose, talc, titanium dioxide, and triacetin.
100 mg
Each white, round, biconvex tablet, engraved with "rphA51" on one side and bisected on the other side, contains atenolol 100 mg. Nonmedicinal ingredients: hydroxypropyl methylcellulose, macrogol/PEG, magnesium stearate, magnesium trisilicate, microcrystalline cellulose, polydextrose, polyethylene glycol, polyvinyl alcohol, sodium croscarmellose, talc, titanium dioxide, and triacetin.
Some medications may have other generic brands available. Always ask your doctor or pharmacist about the safety of switching between brands of the same medication.
Who should NOT take this medication?
Atenolol should not be taken by anyone who:
- is allergic to atenolol or to any ingredients of the medication
- has a condition known as pheochromocytoma (in the absence of alpha-blockade)
- has a condition known as right ventricular failure caused by pulmonary hypertension
- has a condition known as "sick sinus syndrome"
- has a very slow heart rate
- has congestive heart failure
- has metabolic acidosis
- has serious heart block (second- or third-degree AV block)
- has severe peripheral arterial disorders (blockage of blood flow to limbs of body)
- has very low blood pressure
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