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03129.txt
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1994-01-17
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$Unique_ID{BRK03129}
$Pretitle{}
$Title{digitoxin}
$Subject{digitoxin Cardiac glycoside digitalis heart arrhythmias congestive
heart failure strength efficiency rhythm}
$Volume{}
$Log{}
Copyright (C) 1993 Publications International, Ltd.
digitoxin
------------------------------------------------------------------------------
BRAND NAME (Manufacturer)
digitoxin (various manufacturers)
TYPE OF DRUG
Cardiac glycoside
INGREDIENT
digitoxin
DOSAGE FORM
Tablets (0.1 mg and 0.2 mg)
STORAGE
Store at room temperature in a tightly closed container.
USES
Digitoxin belongs to a group of drugs known as digitalis glycosides. It
is used to treat heart arrhythmias and congestive heart failure. Digitoxin
improves the strength and efficiency of the heart and controls the heart
rhythm.
TREATMENT
To avoid stomach irritation, take digitoxin with food, water, or milk
(unless your doctor directs you to do otherwise).
In order to become accustomed to taking this medication, try to take it
at the same time each day.
If you miss a dose of this medication, take the missed dose as soon as
possible, unless it is almost time for the next dose. In that case, do not
take the missed dose at all; just return to your regular dosing schedule. Do
not double the next dose. If you miss two or more doses, check with your
doctor.
Digitoxin does not cure heart failure, but it will help to control the
condition as long as you continue to take it.
SIDE EFFECTS
Minor.
Drowsiness, headache, loss of appetite, nausea, stomach upset, or
vomiting. These side effects should disappear as your body adjusts to the
medication.
Major.
Tell your doctor about any side effects that are persistent or
particularly bothersome. IT IS ESPECIALLY IMPORTANT TO TELL YOUR DOCTOR about
bad dreams, blurred vision, breast enlargement (in both sexes), confusion,
depression, disorientation, hallucinations, muscle weakness, palpitations, or
tingling sensations.
INTERACTIONS
Digitoxin interacts with several other types of medications:
1. Barbiturates, phenytoin, aminoglutethimide, levodopa, penicillamine,
phenylbutazone, and rifampin can decrease the blood levels and effectiveness
of digitoxin.
2. The absorption of digitoxin from the gastrointestinal tract is reduced
when it is taken with colestipol, cholestyramine, metoclopramide, antacids,
neomycin, antineoplastic (anticancer) drugs, or sulfasalazine.
3. Tetracycline can increase the absorption of digitoxin from the
gastrointestinal tract, which can increase the risk of side effects.
4. Spironolactone can unpredictably increase or decrease the side effects
of digitoxin.
5. Concurrent use of quinidine, procainamide, hydroxychloroquine,
calcium, reserpine, ephedrine, or beta blockers (acebutolol, atenolol,
betaxolol, carteolol, esmolol, labetalol, metoprolol, nadolol, penbutolol,
pindolol, propranolol, and timolol) with digitoxin can lead to additive
effects on the heart.
6. The dosage of digitoxin may require adjustment if therapy with thyroid
hormones, methimazole, or propylthiouracil is started.
7. Concurrent use of digitoxin and quinidine, quinine, erythromycin,
amiodarone, benzodiazepine tranquilizers, diltiazem, nifedipine, or verapamil
can increase the blood levels and the side effects of digitoxin.
BE SURE TO TELL YOUR DOCTOR about any medications you are currently
taking, especially those listed above.
WARNINGS
* Tell your doctor about unusual or allergic reactions you have had to
medications, especially to digitoxin or any other digitalis glycoside.
* Before starting to take this medication, be sure to tell your doctor if
you now have or if you have ever had blood electrolyte disorders (too much or
too little calcium, magnesium, or potassium), heart disease, kidney disease,
lung disease, liver disease, or thyroid disease.
* Before having surgery or any other medical or dental treatment, be sure
to tell your doctor or dentist that you are taking this medication.
* Check with your doctor or pharmacist before taking any over-the-counter
(nonprescription) allergy, asthma, cough, cold, diet, or sinus products. Some
of these products can increase the side effects of digitoxin.
* Do not stop taking this medication unless you first check with your
doctor. Stopping abruptly may lead to a worsening of your condition.
* While you are taking digitoxin, your doctor may want you to check your
pulse every day. If your pulse is slower than your doctor has told you it
should be or if the rhythm is irregular, CONTACT YOUR DOCTOR IMMEDIATELY.
* Be sure to tell your doctor if you are pregnant. Although digitoxin
appears to be safe during pregnancy, extensive studies in humans have not been
conducted. In addition, the dosage of digitoxin required to control your
disorder may change during pregnancy. Also, tell your doctor if you are
breast-feeding an infant. It is not known if digitoxin passes into breast
milk.
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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.