In case of HIV-1 infection, Tenofovir disoproxil fumarate may reduce the risk of passing the virus to others, but the chances of infecting others still persist. However, in case of HBV infection, Tenofovir disoproxil fumarate has not proven to reduce risk of transferring the virus to others. Therefore, the patients of both HIV-1 infection and HBV infection should practice safe sex and should not share dirty needles.

Tenofovir disoproxil fumarate is safe if used in the dose and duration advised by your doctor. Take it exactly as directed and do not skip any dose. Follow your doctor's instructions carefully and let your doctor know if any of the side effects bother you.

You should take Tenofovir disoproxil fumarate in the dose and duration advised by your doctor. Tenofovir disoproxil fumarate works best when taken with meals or just afterwards. However, taking it without food does not reduce its effectiveness. If you have any doubts, consult your doctor.

Duration of treatment will depend on the severity of HBV infection. You will need to take periodic blood tests to keep a check on the viral load and number of T cells. Your doctor will then decide the duration of the medicine accordingly. In some cases, treatment is required life long.

Take another tablet of Tenofovir disoproxil fumarate if you vomit within 1 hour of taking it. If you vomit after more than an hour of taking Tenofovir disoproxil fumarate, then you need not take another tablet. Consult your doctor if you have vomiting every time you take Tenofovir disoproxil fumarate or if the vomiting persists for a longer duration.

If you forget to take Tenofovir disoproxil fumarate within 12 hours of the time you usually take it, you should take Tenofovir disoproxil fumarate with food as soon as possible and resume the normal dosing schedule. If you miss a dose of Tenofovir disoproxil fumarate by more than 12 hours and it is almost time for the next dose, you should not take the missed dose and simply resume the usual dosing schedule.

No, you should not breastfeed your baby since small amounts of Tenofovir disoproxil fumarate pass into breast milk. Further, if your baby does not have HIV or HBV, there is a chance that the baby can get HIV or HBV through breastfeeding.