Do not change your doses or medication schedule without your doctor's advice. Store at room temperature away from moisture, heat, and light. Keep the bottle tightly closed when not in use. Take the missed dose as soon as you remember.
Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose. Overdose symptoms may include extreme weakness or lack of energy, very slow heart rate, shortness of breath, or fainting. Health Topics. Health Tools. Atenolol Tenormin. Brand Names: Tenormin. Reviewed: June 23, You should not use atenolol if you are allergic to it, or if you have: a serious heart condition such as "AV block" second or third degree ; very slow heartbeats; or heart failure.
To make sure atenolol is safe for you, tell your doctor if you have: congestive heart failure; coronary artery disease hardened arteries ; asthma, bronchitis, emphysema; diabetes; overactive thyroid; liver or kidney disease; pheochromocytoma tumor of the adrenal gland ; peripheral vascular disease such as Raynaud's syndrome; or allergies or if you are undergoing allergy treatments or skin-testing. Atenolol works as well as other beta blockers for reducing blood pressure.
Other beta blockers, like propranolol , work on your heart and affect other parts of your body, too. There are lots of other medicines to lower your blood pressure and treat chest pain.
Beta blockers are not usually the first choice treatment for high blood pressure. If you're under 55, you'll usually be offered an ACE inhibitor or an angiotensin receptor blocker. If you're 55 or older, or you're any age and of African Caribbean or black African origin, you'll usually be offered a calcium channel blocker. Sometimes you may have to try other blood pressure-lowering medicines if you get side effects. Many people need to take a combination of different blood pressure-lowering tablets.
Atenolol, metoprolol , propranolol and nadolol are all beta blockers , and they work well in preventing migraines.
But most doctors prescribe propranolol. There are some other medicines that are known to prevent migraines, but they're not officially approved in the UK. They include amitriptyline , sodium valproate and gabapentin , and may have different side effects. Topiramate can also be used to prevent migraines. But topiramate has not been officially approved for migraine for children under the age of Tell your doctor that you're taking atenolol if you're going to be put to sleep using general anaesthetic or you're having any kind of major operation.
Your doctor may advise you to stop taking atenolol for 24 hours before surgery. This is because atenolol can lower your blood pressure too much when it's combined with some anaesthetics. Drinking alcohol can increase the blood pressure-lowering effect of atenolol, which can make you feel dizzy or lightheaded.
During the first few days of taking atenolol or after an increase in your dose, it's best to stop drinking alcohol until you see how the medicine affects you. If you find atenolol makes you feel dizzy, it's best to stop drinking alcohol.
Eating a healthy, balanced diet can help if you have high blood pressure or another heart condition. But some types of hormonal methods of contraception, like the combined pill and contraceptive patch , are not usually recommended for women with high blood pressure.
It's unlikely that atenolol affects fertility in men or women. But there's not enough evidence to say for certain. If you're trying for a baby or having problems getting pregnant while on atenolol, speak to your doctor. Some people on atenolol say their sex drive goes down, and some men find they cannot get an erection.
But this is not a common side effect and there's not enough evidence to say for sure that atenolol is causing it. You do not need to stop playing sports if you take atenolol. But do not push yourself too much. Regular exercise is good for you because it lowers blood pressure by keeping your heart and blood vessels in good condition. Be aware, though, that in some sports atenolol is not allowed if you're competing at a high level.
Atenolol can make some people feel dizzy, especially when you first start taking it or after taking a bigger dose. If this happens to you, do not drive a car, ride a bike, or use tools or machinery until you feel better. If you have heart problems, you can boost the health of your heart by making some key lifestyle changes. These will also help if you have high blood pressure.
There are a number of things you can do to help prevent migraines. This includes working out what things trigger an attack so you can avoid them.
Page last reviewed: 19 March Next review due: 19 March Atenolol On this page About atenolol Key facts Who can and cannot take atenolol How and when to take it Side effects How to cope with side effects Pregnancy and breastfeeding Cautions with other medicines Common questions. About atenolol Atenolol belongs to a group of medicines called beta blockers. This medicine is only available on prescription.
Help us improve our website Can you answer a quick question about your visit today? Atenolol slows down your heart rate and makes it easier for your heart to pump blood around your body. It can make you feel dizzy, sick or tired, or give you constipation or diarrhoea. These side effects are usually mild and short-lived. Your very first dose of atenolol may make you feel dizzy, so take it at bedtime.
After that, if you do not feel dizzy, you can take it in the morning. Atenolol is known by the brand name Tenormin. Other brand names include Tenif for atenolol mixed with nifedipine and Co-tenidone atenolol mixed with chlortalidone. To make sure it's safe for you, tell your doctor before starting atenolol if you have: had an allergic reaction to atenolol or any other medicine in the past low blood pressure or a slow heart rate serious blood circulation problems in your limbs such as Raynaud's phenomenon , which may make your fingers and toes tingle or turn pale or blue metabolic acidosis - when there's too much acid in your blood lung disease or asthma Tell your doctor if you're trying to get pregnant, are already pregnant or breastfeeding.
You'll usually take atenolol once or twice a day. It's a good idea to leave 10 to 12 hours between doses if you can. Do not interrupt or stop taking this medicine without first checking with your doctor. Your doctor may want you to gradually reduce the amount you are taking before stopping it completely. Some conditions may become worse when the medicine is stopped suddenly, which can be dangerous. The dose of this medicine will be different for different patients.
Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine.
If your dose is different, do not change it unless your doctor tells you to do so. The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine. If you miss a dose of this medicine, take it as soon as possible.
However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses. Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.
Keep from freezing. It is very important that your doctor check your progress at regular visits to make sure this medicine is working properly and to check for unwanted effects.
Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away. Make sure any doctor or dentist who treats you knows that you are using this medicine.
You may need to stop using this medicine several days before having surgery. Atenolol may cause heart failure in some patients. Check with your doctor right away if you are having chest pain or discomfort; dilated neck veins; extreme fatigue; irregular breathing; an irregular heartbeat; shortness of breath; swelling of the face, fingers, feet, or lower legs; weight gain; or wheezing.
This medicine may cause changes in your blood sugar levels. It is important for you to keep a written list of all of the prescription and nonprescription over-the-counter medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements.
You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Atenolol pronounced as a ten' oh lole. Why is this medication prescribed? How should this medicine be used? Other uses for this medicine What special precautions should I follow? What special dietary instructions should I follow? What should I do if I forget a dose?
What side effects can this medication cause? What should I know about storage and disposal of this medication? Brand names Brand names of combination products. Other uses for this medicine. What special precautions should I follow? Before taking atenolol, tell your doctor and pharmacist if you are allergic to atenolol, any other medications, or any of the ingredients in atenolol tablets. Ask your pharmacist for a list of the ingredients.
Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
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