Generic Name: entecavir (en TEK a vir)Brand Names: Baraclude
Entecavir is an antiviral medication. Entecavir prevents certain virus cells from multiplying in your body
Entecavir is used to treat chronic hepatitis B.
Entecavir may also be used for other purposes not listed in this medication guide.
You should not take this medication if you are allergic to entecavir, or if you also have HIV (human immunodeficiency virus) that is not being treated.Some people have developed a life-threatening condition called lactic acidosis while taking enteavir. Early signs of lactic acidosis generally get worse over time and this condition can be fatal. Get emergency medical help if you have even mild symptoms of lactic acidosis, such as: muscle pain or weakness, numb or cold feeling in your arms and legs, trouble breathing, stomach pain, nausea with vomiting, slow or uneven heart rate, dizziness, or feeling very weak or tired. Entecavir may also cause severe liver symptoms such as nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes). Call your doctor at once if you have any of these symptoms.
Some people with hepatitis B develop liver symptoms after they stop taking entecavir, even months after stopping. Your doctor may want to check your liver function on a regular basis for several months after you stop using this medication. Do not miss any scheduled visits.
HIV or AIDS;
Your name may need to be listed on an antiviral pregnancy registry when you start using this medication.It is not known whether entecavir passes into breast milk or if it could harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the directions on your prescription label.
You may be required to be tested for HIV before you start taking entecavir. Follow your doctor's instructions.Take entecavir with a full glass of water. Take entecavir on an empty stomach, at least 2 hours before or 2 hours after eating.
Measure the liquid form (oral solution) of entecavir with the dosing spoon provided with this medication. Hold the dosing spoon in an upright position and fill it slowly until the liquid reaches the mark of your correct dose. Rinse the dosing spoon with water after each use. If you do not receive a dosing spoon with your medication, ask your pharmacist for one.
Some people with hepatitis B develop liver symptoms after they stop taking entecavir, even months after stopping. Your doctor may want to check your liver function on a regular basis for several months after you stop using this medication. Do not miss any scheduled visits.Store entecavir at room temperature away from moisture and heat.
Keep the tablets in a tightly-closed container.
Keep the bottle of oral liquid in its original carton to help protect the medicine from light. Throw away any unused entecavir oral liquid after the expiration date on the label has passed.
See also: Entecavir dosage in more detail
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
Symptoms of an entecavir overdose are not known.
Taking entecavir will not prevent you from passing hepatitis B to other people through unprotected sex or sharing of needles. Talk with your doctor about safe methods of preventing hepatitis transmission during sex, such as using a condom and spermicide. Sharing drug or medicine needles is never safe, even for a healthy person.
muscle pain or weakness;
numb or cold feeling in your arms and legs;
feeling dizzy, light-headed, tired, or very weak;
stomach pain, nausea with vomiting; or
slow or uneven heart rate.
nausea, stomach pain, loss of appetite;
dark urine, clay-colored stools; or
jaundice (yellowing of the skin or eyes).
Less serious side effects may include:
mild nausea, vomiting, diarrhea, upset stomach;
temporary hair loss;
skin rash; or
sleep problems (insomnia).
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Usual Adult Dose for Chronic Hepatitis B:
Nucleoside treatment-naive: 0.5 mg orally once a dayLamivudine-refractory or known lamivudine or telbivudine resistance mutations: 1 mg orally once a day
Usual Pediatric Dose for Chronic Hepatitis B:
16 years or older:Nucleoside treatment-naive: 0.5 mg orally once a dayLamivudine-refractory or known lamivudine or telbivudine resistance mutations: 1 mg orally once a day
Before taking entecavir, tell your doctor if you are using any of the following drugs:
drugs that weaken your immune system (such as cancer medicine or steroids);
amphotericin B (Fungizone, AmBisome, Amphotec, Abelcet);
cyclosporine (Neoral, Sandimmune, Gengraf);
pentamidine (Nebupent, Pentam);
sirolimus (Rapamune), tacrolimus (Prograf);
antibiotics such as capreomycin (Capastat), rifampin (Rifadin, Rimactane, Rifater), vancomycin (Vancocin, Vancoled); or
any other antiviral medicines.
This list is not complete and there may be other drugs that can interact with entecavir. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.