くすりのしおり

Internal
Revised: 3/2014

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 :
VALACICLOVIR Tablets 500mg "MEIJI"
 Active ingredient:
Valaciclovir hydrochloride
 Dosage form:
white to faint yellowish white tablet, major axis: 18.7 mm, minor axis: 7.5 mm, thickness: 6.0 mm
 Print on wrapping:
バラシクロビル500mg「明治」, MS065, VALACICLOVIR 500mg「MEIJI」

Effects of this medicine

This medicine inhibits replication of viral DNA to suppress the growth of virus.
It is usually used to treat herpes simplex, herpes zoster or varicella and to suppress recurrence of genital herpes.

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 have renal impairment or are under dialysis therapy.
  • If you are pregnant or 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))
  • Herpes simplex: In general, for adults, take 1 tablet (500 mg of valaciclovir) at a time, twice a day.
    Herpes zoster: In general, for adults, take 2 tablets (1,000 mg of valaciclovir) at a time, 3 times a day.
    Suppression of recurrence of genital herpes: In general, for adults, take 1 tablet (500 mg of valaciclovir) at a time, once a day. The dose and dose frequency may vary according to the symptom.
    Varicella: In general, for adults and for children with a body weight of 40 kg or greater, take 2 tablets (1,000 mg of valaciclovir) at a time, 3 times a day.
    In any case, the dose and dose frequency may vary according to the underlying disease. Strictly follow the instructions.
  • If you miss a dose, take the missed dose as soon as possible. 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

  • Please take a larger amount of water than usual while you are on this medicine. However, if you have been instructed to restrict fluid intake, please consult with your doctor or pharmacist.
  • This medicine may cause reduced consciousness including sleepiness. Pay close attention when driving a car or operating dangerous machinery. Patients with renal dysfunction are more susceptible to consciousness disorder, so avoid operating dangerous machinery if instructed to do so by your doctor.

Possible adverse reactions to this medicine

The most commonly reported adverse reactions include headache, decreased consciousness, abdominal pain, nausea, diarrhea and hypersensitivity (rash, hives, itching and photosensitivity). 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.
  • respiratory distress, angioedema, palpitation [anaphylactic shock, anaphylaxis]
  • fever, bleeding tendency, general malaise [blood disorders including pancytopenia/agranulocytosis]
  • decreased urine output, edema, general malaise [acute renal failure]
  • coma, hallucination, convulsion [psychoneurological symptoms]
  • conjunctival congestion, erythema with edema on the center, erosions of oral cavity or genital mucosa [toxic epidermal necrolysis, muco-cutaneo-ocular syndrome]
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 reach of children. Store away from direct sunlight, 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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