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GlaxoSmithKline K.K.
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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.
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Brand name :
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Zefix Tablets 100
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Dosage form:
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pale orange brown tablet, major axis: 11.5 mm, minor axis: 5.5 mm, thickness: 3.6 mm
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Print on wrapping:
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(Face) Zefix 100 mg, GX CG5, (Back) ゼフィックス100 mg
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Effects of this medicine
This medicine decreases the amount of virus by suppressing the growth of the hepatitis B virus and improves liver function.
It is usually used to treat chronic hepatitis B virus infection.
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Before using this medicine, be sure to tell your doctor and pharmacist
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If you have previously experienced any allergic reactions (itch, rash, etc.) to any medicines.
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If you are pregnant or breastfeeding.
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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.)
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Dosing schedule (How to take this medicine)
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Your dosing schedule prescribed by your doctor is << to be written by a healthcare professional>>
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In general, for adults, take one tablet (100 mg of the active ingredient) at a time once a day. Strictly follow the instructions.
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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 continue your regular dosing schedule. You should never take two doses at one time.
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If you accidentally take more than your prescribed dose, consult with your doctor or pharmacist.
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Do not stop taking the medicine unless your doctor instructs you to do so. In general, it is necessary to take this medicine for a long period of time. Discontinuation of this medicine without permission may lead to disease progression.
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Precautions while taking this medicine
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It is important that you receive medical examination on a regular basis because symptoms of chronic hepatitis B and hepatic cirrhosis B are extremely difficult to detect on your own.
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Possible adverse reactions to this medicine
The most commonly reported adverse reactions include headache and malaise. 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.
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nasal bleeding, gum bleeding, subcutaneous bleeding [thrombocytopenia]
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muscle pain of limbs, feeling of weakness, reddish brown urine [rhabdomyolysis]
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.
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Storage conditions and other information
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Keep out of the reach of children. Store away from direct sunlight, heat and moisture.
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Discard the remainder. Do not store them. Consult with your dispensing pharmacy or medical institution on how to discard the medicine.
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