くすりのしおり

Internal
Revised: 1/2008

The information on this sheet is based on approvals granted by the Japanese regulatory authority. Approval details may vary by country. Medicines have adverse reactions (risks) as well as efficacies (benefits). It is important to minimize adverse reactions and maximize efficacy. To obtain a better therapeutic response, patients should understand their medication and cooperate with the treatment.
Brand name :
Catapres Tablets 150μg
 Active ingredient:
Clonidine hydrochloride
 Dosage form:
white tablet (diameter: 8.0mm, thickness: 2.6mm)
 Print on wrapping:
(Face) Catapres 150μg, 15C
(Back)カタプレス150μg, company logo, Boehringer Ingelheim, recycle mark

Effects of this medicine

By selectively acting on α2-receptors in the brain stem, this medicine reduces the sympathetic nervous tension and dilates peripheral blood vessels. This results in a decrease in blood pressure.
Usually, this medicine is used to treat various types of hypertension (essential and renal hypertension).

Before using this medicine, be sure to tell your doctor and pharmacist

  • If you have ever had any unusual or allergic reaction (itch, rash etc.) to any medicines.
    If you have kidney impairment, heart failure, ischemic heart disease or congestive heart disease, cerebral infarction, cerebrovascular disorder, abnormal pulse or fever.
  • If you are already pregnant or are breastfeeding.
  • If you are taking any other medicinal products. (Some medicines may interact to enhance or diminish medicinal effects. Beware of over-the-counter medicines and dietary supplements as well as other prescription medicines.)

Dosing schedule (How to take this medicine)

  • Your dosing schedule prescribed by your doctor is ((        to be written by a healthcare professional))
  • General dosage regimen: Usually for adults, 1/2 to one tablet (0.075-0.150mg of clonidine hydrochloride) is orally administered three times daily. The dosage may be adjusted according to severity of symptoms. In severe cases two tablets (0.30mg) are orally administrataed three times daily. Follow your doctor's instructions.
  • If you are ordered to take this medicine on regular schedule and you missed a dose, take as soon as possible. If it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. DO NOT take a double dose to make up for the missed dose.
  • If you took too much of this medicine (more than ordered), check with your doctor/pharmacist.
  • Do not stop taking this medicine without the instructions of your doctor.

Precautions while taking this medicine

  • Use caution when driving a car, operating machinery, working at high places or engaging in other hazardous activities. This medicine may diminish reflex movement, etc. due to its sedative action.
  • Use caution while drinking alcohol since it may increase the sedative effect of this medicine.

Possible adverse reactions to this medicine

Common side effects are reported as below. If any of them occurs, check with your doctor/pharmacist: thirst/dry mouth, drowsiness, sedation, dizziness, fatigue, feeling of weakness/tiredness, rash, itching.
The symptoms described below are rarely seen as initial symptoms of the adverse reactions indicated in brackets. If any of these symptoms occur, stop taking this medicine and see your doctor immediately.
  • seeing things and hearing sounds that do not exist. [hallucination]
  • having trouble thinking clearly or experience confusion of time or place. [confusion]
The above symptoms do not describe all the adverse reactions to this medicine. Consult with your doctor or pharmacist if you notice any symptoms of concern other than those listed above.

Storage conditions and other information

  • Keep out of the reach of children. Store away from heat, moisture and direct sunlight.
  • Discard unused medicine.

For healthcare professional use only : Day Month Year

For further information, talk to your doctor or pharmacist.

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