Tenofovir (Oral Route)

Name: Tenofovir (Oral Route)

US Brand Name

  1. Viread

Breastfeeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Atazanavir
  • Didanosine
  • Ledipasvir

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Darunavir
  • Lopinavir
  • Ritonavir
  • Tipranavir

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Dosing

The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so.

The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.

  • For oral dosage forms (oral powder or tablets):
    • For treatment of HIV infection:
      • Adults and children 12 years of age and older weighing 35 kilograms (kg) or more—300 milligrams (mg) once a day.
      • Children 2 to 11 years of age—Dose is based on body weight and must be determined by your doctor. The dose is usually 8 milligrams (mg) per kilogram (kg) of body weight per day. Your doctor may increase your dose as needed. However, the dose is usually not more than 300 mg per day.
      • Children younger than 2 years of age—Use and dose must be determined by your doctor.
    • For treatment of chronic hepatitis B infection:
      • Adults and children 12 years of age and older weighing 35 kilograms (kg) or more—300 milligrams (mg) once a day.
      • Children younger than 12 years of age and weighing less than 35 kg—Use and dose must be determined by your doctor.

Missed Dose

If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.

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