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Contact us for availability Details Product: Zeffix Drug Name: Lamivudine Packaging Type: Packets of 28 x 100 mg Tablets Manufacturer: GlaxoSmithKline Use: Zeffix is used by people in the treatment of long term chronic Hepatitis B. How to take it: The normal adult dose is one 100 mg tablet once a day. Your doctor may prescribe a different dosage, for example if you have kidney problems. Zeffix tablets should be swallowed whole with a glass of water, and can be taken with or without food. Side Effects: People taking Zeffix may experience headache, vomiting and diarrhoea, feeling sick, tiredness, stomach discomfort or pain, or flu like symptoms. If you suffer different side effects than what is listed here, please tell your doctor. Precautions: Tell your doctor or pharmacist that you are taking Zeffix tablets if you are about to be started on any other medicines. Tell your doctor if you become pregnant or are trying to become pregnant. Tell your doctor if, for any reason, you have not taken your medicine exactly as prescribed. Otherwise, your doctor may think that it was not effective and change your treatment unnecessarily. Do not stop taking Zeffix tablets, or change the dose without first checking with your doctor. If you stop taking Zeffix your hepatitis may get worse. This can cause serious illness particularly if your liver is already not working very well. If you do have to stop taking Zeffix your doctor is likely to arrange tests over the following four months to check how well your liver is working. Do not give this medicine to anyone else, even if their symptoms seem similar to yours. Do not use Zeffix tablets to treat any other complaints unless your doctor says to.