Tenvir 300 mg is a prescription medicine used in combination with antiviral medicine to treat the Human Immunodeficiency Virus (HIV) in adults and children two years of age and older. When your doctor may prescribe Tenofovir 300 tablets may reduce the amount of HIV in your bloodstream. The medication may also increase certain cells in your blood called CD4 (T) cells which help fight off other infections. Reducing the amount of virus in the blood and increasing CD4 (T) cell may improve your immune system. This may reduce the risk of death or infections that can happen when you have a weak immune system. Tenofovir does not cure HIV infection. People may still develop infections or other health conditions associated with infection. Patients should stick to HIV therapy to control infections and decrease complications associated with the disease. You must receive this antiviral treatment under the supervision of a doctor. The medicine is also effective in treating the hepatitis B virus in adults. Tenofovir tablets will not cure the hepatitis B virus. The medicine lowers the amount of virus in your body and improves the condition of your liver. It is unknown if the medication is safe and effective for treating chronic hepatitis B in children under 18 years of age.

Take Tenvir 300 mg exactly as directed by your doctor. Take it daily without missing a dose. For adults, the usual dose is Tenvir 300 mg each day. If you are suffering from kidney problems, your doctor may advise you to take this antiviral medication less often. Discuss with your doctor about the correct dosage for children.

Before you take Tenvir 300 mg, tell your doctor if you have liver problems, kidney disease, bone problems, have HIV or HBV infection, bone problems, or are pregnant or plan to become pregnant.  It is not known whether Tenofovir will harm your unborn baby. Do not breastfeed if you are taking Tenvir tablets. The antiviral drug passes into your breast milk. Therefore, one should not breastfeed because of the risk of passing HIV to your baby. Discuss with your doctor the best way to feed your baby. Let your doctor know if you are taking medicines, including those you get over the counter.

Tenvir 300 mg can cause serious side effects, including the build-up of an acid in your blood and severe liver problems. Call your doctor straight away if you develop symptoms of liver problems such as dark colour bowled movements, dark coloured urine, nausea, stomach pain, nausea, and loss of appetite for several days.

You are more likely to get lactic acidosis or severe liver problems if you are a female, are overweight, or have been taking Tenvir 300 mg tablets for a longer duration. Worsening of your hepatitis B infection may occur. Your hepatitis B infection may become worse if you take and then stop it.