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- $Unique_ID{BRK03037}
- $Pretitle{}
- $Title{atenolol}
- $Subject{Tenormin ICI Pharma Beta-adrenergic blocking agent atenolol high
- blood pressure angina chest pain beta blockers controlling impulses nerve
- pathways decreased workload heart}
- $Volume{}
- $Log{
- Tenormin 50 mg*0303701.scf
- Tenormin 100 mg*0303702.scf}
-
- Copyright (C) 1993 Publications International, Ltd.
-
-
- atenolol
- ------------------------------------------------------------------------------
-
- BRAND NAMES (Manufacturers)
-
- atenolol (various manufacturers)
- Tenormin (ICI Pharma)
-
- TYPE OF DRUG
-
- Beta-adrenergic blocking agent
-
- INGREDIENT
-
- atenolol
-
- DOSAGE FORM
-
- Tablets (25 mg, 50 mg, and 100 mg)
-
- STORAGE
-
- Atenolol should be stored at room temperature in a tightly closed,
- light-resistant container.
-
- USES
-
- Atenolol is used to treat high blood pressure and angina (chest pain).
- It belongs to a group of medicines known as beta-adrenergic blocking agents
- or, more commonly, beta blockers. These drugs work by controlling impulses
- along certain nerve pathways. The result is a decreased workload for the
- heart.
-
- TREATMENT
-
- Atenolol can be taken with a glass of water, with meals, immediately
- following meals, or on an empty stomach, depending on your doctor's
- instructions. Try to take the medication at the same time(s) each day.
- Try not to miss any doses of this medication. If you do miss a dose,
- take the missed dose as soon as possible. However, if the next scheduled dose
- is within eight hours (if you are taking this medicine only once a day) or
- within four hours (if you are taking this medicine more than once a day), do
- not take the missed dose at all; just return to your regular dosing schedule.
- Do not double the next dose.
- It is important to remember that atenolol does not cure high blood
- pressure, but it will help to control the condition as long as you continue to
- take it.
-
- SIDE EFFECTS
-
- Minor.
-
- Anxiety; constipation; decreased sexual ability; diarrhea; difficulty in
- sleeping; drowsiness; dryness of the eyes, mouth, and skin; headache; nausea;
- nervousness; stomach discomfort; tiredness; or weakness. These side effects
- should disappear as your body adjusts to the medicine.
- If you are extra-sensitive to the cold, be sure to dress warmly during
- cold weather.
- To relieve constipation, increase the amount of fiber in your diet (fresh
- fruits and vegetables, salads, bran, and whole-grain breads), and drink more
- water (unless your doctor directs you to do otherwise).
- Plain, nonmedicated eye drops (artificial tears) may help to relieve eye
- dryness.
- Sucking on ice chips or chewing sugarless gum helps relieve mouth or
- throat dryness.
-
- Major.
-
- Tell your doctor about any side effects that are persistent or
- particularly bothersome. IT IS ESPECIALLY IMPORTANT TO TELL YOUR DOCTOR about
- breathing difficulty or wheezing; cold hands or feet (due to decreased blood
- circulation to skin, fingers, and toes); confusion; dizziness; fever and sore
- throat; hair loss; hallucinations; light-headedness; mental depression;
- nightmares; reduced alertness; skin rash; swelling of the ankles, feet, or
- lower legs; or unusual bleeding or bruising.
-
- INTERACTIONS
-
- Atenolol interacts with a number of other medications:
- 1. Indomethacin has been shown to decrease the blood-pressure-lowering
- effects of the beta blockers. This may also happen with aspirin or other
- salicylates.
- 2. Concurrent use of beta blockers and calcium channel blockers
- (diltiazem, nifedipine, and verapamil) or disopyramide can lead to heart
- failure or very low blood pressure.
- 3. Cimetidine and oral contraceptives (birth control pills) can increase
- the side effects of beta blockers.
- 4. Side effects may also be increased when beta blockers are taken with
- clonidine, digoxin, epinephrine, phenylephrine, phenylpropanolamine,
- phenothiazine tranquilizers, prazosin, or monoamine oxidase (MAO) inhibitors.
- At least 14 days should separate the use of a beta blocker and the use of an
- MAO inhibitor.
- 5. Alcohol, barbiturates, and rifampin can decrease the effectiveness of
- atenolol.
- 6. Beta blockers may antagonize (work against) the effects of
- theophylline, aminophylline, albuterol, isoproterenol, metaproterenol, and
- terbutaline.
- 7. Beta blockers can also interact with insulin or oral antidiabetic
- agents--raising or lowering blood sugar levels or masking the symptoms of low
- blood sugar.
- 8. The action of beta blockers may be increased if they are used with
- chlorpromazine, furosemide, or hydralazine, which may have a negative effect.
- 9. In patients who have congestive heart failure treated with digitalis
- glycosides (for example, digoxin or digitoxin), caution should be used as both
- betaxolol and digitalis products may slow heart conduction.
- BE SURE TO TELL YOUR DOCTOR about any medications you are currently
- taking, especially any of those listed above.
-
- WARNINGS
-
- * Before starting to take this medication, it is important to tell your
- doctor if you have ever had unusual or allergic reactions to any beta blocker
- (acebutolol, atenolol, betaxolol, carteolol, esmolol, labetalol, metoprolol,
- nadolol, penbutolol, pindolol, propranolol, and timolol).
- * Tell your doctor if you now have or if you have ever had allergies,
- asthma, hay fever, eczema, slow heartbeat, bronchitis, diabetes mellitus,
- emphysema, heart or blood vessel disease, kidney disease, liver disease,
- thyroid disease, or poor circulation in the fingers or toes.
- * In diabetics, atenolol may block some of the warning signs of low blood
- sugar (hypoglycemia), such as rapid pulse rate, but not others, such as
- dizziness or sweating.
- * You may want to check your pulse while taking this medication. If your
- pulse is much slower than your usual rate (or if it is less than 50 beats per
- minute), check with your doctor. A pulse rate that is too slow may cause
- circulation problems.
- * Atenolol may affect your body's response to exercise. Make sure you
- discuss with your doctor a safe amount of exercise for your medical condition.
- * It is important that you do not stop taking this medicine without first
- checking with your doctor. Some conditions may become worse when the medicine
- is stopped suddenly, and the danger of a heart attack is increased in some
- patients. Your doctor may want you to gradually reduce the amount of medicine
- you take before stopping completely. Make sure that you have enough medicine
- on hand to last through vacations, and holidays.
- * Before having surgery or any other medical or dental treatment, tell
- the physician or dentist that you are taking this medicine. Often, this
- medication will be discontinued 48 hours prior to any major surgery.
- * This medicine can cause dizziness, drowsiness, light-headedness, or
- decreased alertness. Therefore, exercise caution while driving a car or using
- any potentially dangerous equipment.
- * While taking this medicine, do not use any over-the-counter
- (nonprescription) asthma, allergy, cough, cold, sinus, or diet preparations
- unless you first check with your pharmacist or doctor. Some of these
- medicines can cause high blood pressure when taken at the same time as a beta
- blocker.
- * Be sure to tell your doctor if you are pregnant. Animal studies have
- shown that some beta blockers can cause problems in pregnancy when used at
- very high doses. Adequate studies have not been done in humans, but there has
- been some association between beta blockers used during pregnancy and low
- birth weight, as well as breathing problems and slow heart rate in the newborn
- infants. However, other reports have shown no effects on newborn infants.
- Also, tell your doctor if you are breast-feeding an infant. Small amounts of
- atenolol may pass into breast milk.
-
- ----------------
-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-