くすりのしおり

Internal
Revised: 12/2018

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 :
NAFTOPIDIL OD Tablets 25mg "KN"
 Active ingredient:
Naftopidil
 Dosage form:
white tablet with split line, diameter: approx. 7.1 mm, thickness: approx. 2.8 mm
 Print on wrapping:
(face)ナフトピジルOD25mg「KN」, ナフトピジル, OD25mg, 排尿障害治療剤
(reverse side)NAFTOPIDILOD25mg「KN」, ナフトピジル, OD25mg

Effects of this medicine

This medicine makes urinating easier by blocking α1 receptors and decreasing the tension in the prostate and urethra.
It is usually used to treat urinary dysfunction associated with prostatic hyperplasia.

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

  • If you have previously experienced any allergic reactions (itch, rash, etc.) to any medicines.
  • 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))
  • In general, for adults, start with 25 mg of the active ingredient at a time, once a day after meal. If its effect is insufficient, the dosage may be gradually increased to 50 to 75 mg at a time, once a day after meal, at an interval of 1 to 2 weeks. The dosage may be adjusted according to your symptoms. However, the maximum daily dose is 75 mg. This medicine contains 25 mg of the active ingredient in a tablet. Strictly follow the instructions.
  • You can take this medicine without water. Moisten the tablet with saliva on your tongue, then crush it lightly with your tongue, and swallow the tablet with saliva. You can also take the medicine with water. However, do not take the tablet without water when you are lying down.
  • If you miss a dose, take the missed dose as soon as possible. However, if it is almost time for the next dose, skip the missed dose and follow your regular dosing schedule. You should never take two doses at one time.
  • If you accidentally take more than your prescribed dose, consult with your doctor or pharmacist.
  • Do not stop taking this medicine unless your doctor instructs you to do so.

Precautions while taking this medicine

  • This medicine may cause dizziness or dizziness on standing up. Pay attention when performing dangerous operations such as working at heights or driving a car.
  • Intraoperative floppy iris syndrome reportedly occurs during ophthalmic surgery, such as for cataract. If ophthalmic surgery is scheduled, make sure to tell your eye doctor that you are taking this medicine or have taken this medicine before.

Possible adverse reactions to this medicine

The most commonly reported adverse reactions include dizziness/light-headed feeling, dizziness on standing up, hypotension, stomach discomfort, rash, itch, hives and erythema multiforme. If any of these symptoms occur, consult with your doctor or pharmacist.
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.
  • general malaise, loss of appetite, yellowing of skin and the whites of the eyes [hepatic function disorder, jaundice]
  • faint, loss of consciousness [syncope, unconsciousness]
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 light, heat and moisture.
  • Discard the remainder. Do not store them.

For healthcare professional use only : Day Month Year

For further information, talk to your doctor or pharmacist.

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