Catapres
Brand
name:Catapres
Pronounced: KAT-uh-press
Generic name: Clonidine hydrochloride
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Why
is Catapres prescribed?
Clonidine
hydrochloride is prescribed for high blood pressure. It is effective
when used alone or with other high blood pressure medications.
Doctors
also prescribe Catapres for alcohol, nicotine, or benzodiazepine
(tranquilizer) withdrawal; migraine headaches; smoking cessation
programs; Tourette's syndrome (tics and uncontrollable utterances);
narcotic/methadone detoxification; premenstrual tension; and diabetic
diarrhea.
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Most
important fact about Catapres
If
you have high blood pressure, you must take Catapres regularly
for it to be effective. Since blood pressure declines gradually,
it may be several weeks before you get the full benefit of Catapres;
and you must continue taking it even if you are feeling well.
Catapres does not cure high blood pressure; it merely keeps it
under control.
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Catapres (Clonidine) Now !
How
should you take Catapres?
Take
this medication exactly as prescribed, even if you are feeling
well. Try not to miss any doses. If Catapres is not taken regularly,
your condition may get worse.
The
Catapres-TTS patch should be put on a hairless, clean area of
the upper outer arm or chest. Normally, a new one is applied every
7 days to a new area of the skin. If the patch becomes loose,
use some adhesive tape or an adhesive bandage to keep it in place.
--If
you miss a dose...
Take
it as soon as you remember, then go back to your regular schedule.
If you forget to take the medication 2 or more times in a row,
or if you forget to change the transdermal patch for 3 or more
days, contact your doctor.
--Storage
instructions...
Store
at room temperature in a tightly closed container away from light.
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What
side effects may occur?
Side
effects cannot be anticipated. If any develop or change in intensity,
inform your doctor as soon as possible. Only your doctor can determine
if it is safe for you to continue taking Catapres.
More
common side effects may include:
Agitation, constipation, dizziness, drowsiness, dry mouth, fatigue,
impotence, loss of sex drive, nausea, nervousness, sedation (calm),
vomiting, weakness
Less
common side effects may include:
Changes in heartbeat, excessive nighttime urination, headache,
loss of appetite, mental depression, pounding heartbeat, vague
bodily discomfort, weight gain
Rare
side effects may include:
Abdominal pain, anxiety, behavior changes, blurred vision, breast
development in males, burning eyes, congestive heart failure,
constipation, delirium, dry eyes, dry nasal passages, fainting,
fever, greater sensitivity to alcohol, hallucinations, heart irregularities,
hepatitis, hair loss, hives, insomnia, itching, joint pain, leg
cramps, little or no urination, muscle pain, pallor, restlessness,
vivid dreams or nightmares
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Additional
side effects of Catapres-TTS may include:
Abrasions, blisters, burning or reddened skin, discolored or whitened
skin, pimples, throbbing skin
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Why
should Catapres not be prescribed?
Do
not take Clonidine hydrochloride if you have ever had an allergic
reaction to Catapres or to any of the components of the transdermal
patch.
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Special
warnings about Catapres
Catapres
should not be stopped suddenly. Headache, nervousness, agitation,
tremor, confusion, and rapid rise in blood pressure can occur.
Severe reactions such as disruption of brain functions, stroke,
fluid in the lungs, and death have also been reported. Your doctor
should gradually reduce your dosage over several days to avoid
withdrawal symptoms.
If
you see redness, blistering, or a rash near the transdermal patch,
call your doctor. You may need to remove the patch. If you are
troubled by mild irritation before completing 7 days of use, you
may remove the patch and apply a new one at a different site.
If
your doctor has switched you to oral Catapres (tablet) because
you had an allergic reaction, such as a rash or hives, to the
transdermal skin patch, be aware that you may have a similar reaction
to the Catapres tablet.
If
you have severe heart or kidney disease, are recovering from a
heart attack, or have a disease of the blood vessels of the brain,
your doctor will prescribe Catapres with caution.
If
you are taking Clonidine hydrochloride and a beta blocker such
as Inderal or Tenormin, and your doctor wants to stop your medication,
the beta blocker should be stopped several days before the gradual
withdrawal of Catapres.
Catapres
may cause drowsiness. If it has this effect on you, avoid driving,
operating dangerous machinery, or participating in any hazardous
activity that requires full mental alertness.
The
used Catapres-TTS patch still contains enough drug to be harmful
to children and pets. Fold the patch in half with the adhesive
sides together and dispose of it out of the reach of children.
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Possible
food and drug interactions
Catapres may increase the effects of alcohol. Do not drink alcohol
while taking this medication.
If
Catapres is taken with certain other drugs, the effects of either
could be increased, decreased, or altered. It is especially important
to check with your doctor before combining Catapres with the following:
-
Barbiturates such as Nembutal and Seconal
- Beta-blocker drugs such as the blood pressure medications Inderal
and Lopressor
- Calcium blockers such as the heart medications Calan and Cardizem
- Digitalis
- Sedatives such as Valium, Xanax, and Halcion
- Tricyclic antidepressants such as Elavil and Tofranil
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Special
information
The effects of Catapres during pregnancy have not been adequately
studied. If you are pregnant or plan to become pregnant, inform
your doctor immediately. Catapres appears in breast milk and could
affect a nursing infant. If this medication is essential to your
health, your doctor may advise you to discontinue breastfeeding
until your treatment with this medication is finished.
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Recommended
dosage
ADULTS
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The dosage will be adjusted to your individual needs.
The usual starting dose is 0.1 milligram, twice a day (usually
in the morning and at bedtime).
The
regular dose of Catapres is determined by increasing the daily
dose by 0.1 milligram at weekly intervals until the desired response
is achieved. A larger portion of the increased dose can be taken
at bedtime to reduce potential side effects of drowsiness and
dry mouth that may appear when you begin taking this drug.
The
most common effective dosages range from 0.2 milligram to 0.6
milligram per day divided into smaller doses. The maximum effective
dose is 2.4 milligrams per day; however, this dose is not usually
prescribed.
Transdermal
Patch
The
patch comes in different strengths, and your doctor will determine
which is best for you based on your blood pressure response.
People
who are using another high blood pressure medication should not
stop taking it abruptly when they begin using the patch, because
the medication in the patch may take a few days to begin working.
The other medication should be discontinued slowly as the patch
begins to take effect.
CHILDREN
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Safety and effectiveness of the Catapres tablets and patch in
children below the age of 12 have not been established.
OLDER
ADULTS
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Dosages are generally as above; however, the initial dosage for
an older person may be lower than the regular starting dose.
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Overdosage
Symptoms
of Catapres overdose may include:
Constriction of pupils of the eye, drowsiness, high blood pressure
followed by a drop in pressure, irritability, low body temperature,
slowed breathing, slowed heartbeat, slowed reflexes, weakness
Large
overdoses can cause changes in heart function or rhythm, coma,
seizures, and temporary interruptions in breathing.
Getting
a patch in the mouth or swallowing one can cause an overdose.
If
you suspect symptoms of a Catapres overdose, seek medical attention
immediately.
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