Safely Buy Zeffix ( Lamivudine ) from Canada Prescriptions Plus.

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Formulation : Tablet
Drug Name Dosage Quantity Price Buy Now
Zeffix 100mg 28 $111.09 Add To Cart
Zeffix 100mg 84 $282.79 Add To Cart
Dosage: 100mg
Quantity: 28
Price: $111.09
Dosage: 100mg
Quantity: 84
Price: $282.79


Zeffix is a medication that contains the active substance lamivudine. It is primarily used to treat chronic hepatitis B infection in adults.

Lamivudine is an antiretroviral medicine and a nucleoside reverse transcriptase inhibitor.

Use and Dosage

Read the Patient Information Leaflet if available from your pharmacist before you start using lamivudine-HBV and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

Take lamivudine-HBV by mouth with or without food as directed by your doctor, usually once a day. The dosage is based on your medical condition and response to treatment.

Use this medicine regularly to get the most benefit from it. This medication works best when the amount of drug in your body is kept at a constant level. Remember to use it at the same time each day. Do not skip any doses.

Side Effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Mild symptoms of lactic acidosis may worsen over time, and this condition can be fatal. Get emergency medical help if you have: unusual muscle pain, trouble breathing, stomach pain, vomiting, irregular heart rate, dizziness, feeling cold, or feeling very weak or tired.

Serious side effects include:

  • Pancreas problems–severe pain in your upper stomach spreading to your back, nausea and vomiting, fast heart rate
  • Liver problems–swelling around your midsection, right-sided upper stomach pain, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes)

Lamivudine affects your immune system, which may cause certain side effects (even weeks or months after you have taken lamivudine). Tell your doctor if you have:

  • Signs of a new infection–fever, night sweats, swollen glands, cold sores, cough, wheezing, diarrhea, weight loss
  • Trouble speaking or swallowing, problems with balance or eye movement, weakness, or prickly feeling
  • Swelling in your neck or throat (enlarged thyroid), menstrual changes, impotence

Common side effects of lamivudine may include:

  • Nausea, diarrhea
  • Headache
  • Fever, tiredness, general ill feeling
  • Ear infection–ear pain or full feeling, trouble hearing, drainage from the ear, fussiness in a child
  • Nose or throat infection–stuffy nose, sneezing, sore throat, cough

This is not a complete list of side effects and others may occur.


  • Before taking lamivudine-HBV, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
  • Before using lamivudine-HBV, tell your doctor or pharmacist your medical history, especially of: pancreatitis, HIV infection, kidney disease, blood disorders, and liver disease.
  • This drug may make you dizzy or drowsy. Alcohol or marijuana (cannabis) can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Avoid alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).
  • Liquid preparations of lamivudine-HBV contain sugar (sucrose). If you are a diabetic using the liquid form of this drug, closer monitoring of your blood sugar is recommended as you begin using this drug. Talk with your doctor or pharmacist for more details.
  • Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
  • Children may be more sensitive to the side effects of this drug, especially the increased risk of pancreatitis.
  • During pregnancy, this medication should be used only when needed. Discuss the risks and benefits with your doctor. This medication has not been shown to prevent the passing of hepatitis B from the mother to the newborn. Consult your doctor for more information.
  • This medication passes into breast milk. Consult your doctor before breast-feeding.

Forms and Strengths

Zeffix is available in the following forms and strengths:

  • Zeffix Tablet:
    • 100 mg


What happens if I miss a dose?

Take the medicine as soon as you can but skip the missed dose if it is almost time for your next dose.

Do not take two doses at one time.

Get your prescription refilled before you run out of medicine completely.

What happens if I overdose?

Seek emergency medical attention.

What should I avoid while taking lamivudine?

Avoid taking other medications that contain an ingredient called sorbitol, often used as a sweetener in liquid medicines. Ask your pharmacist if you are not sure a medicine contains this ingredient.

Using lamivudine will not prevent your disease from spreading. Talk with your doctor about safe ways to prevent HIV transmission during sex. Sharing drugs or medicine needles is never safe, even for a healthy person.



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Quantities Available:

28, 84