Tenofovir Alfenamide
Uses of Tenofovir Alfenamide
- Tenofovir Alafenamide (TAF) is a nucleotide reverse transcriptase inhibitor (NtRTI) used to treat chronic hepatitis B and HIV-1 infection. It is designed to deliver the active antiviral effect at lower doses, with reduced impact on the kidneys and bones compared to older formulations.
Tenofovir Alafenamide is commonly used for:
1. Chronic hepatitis B (HBV): Suppresses hepatitis B virus replication in adults and children aged 12 years and older with stable liver disease, helping to reduce liver inflammation and the risk of long-term liver damage.
2. HIV-1 infection: Used as part of combination antiretroviral therapy (ART) in adults and adolescents to suppress HIV replication, reduce viral load, and help preserve immune function.
3. Patients with kidney or bone concerns: Preferred over older tenofovir formulations in patients who are at higher risk of kidney problems or reduced bone density, as it is associated with lower systemic drug exposure.
Side effects of Tenofovir Alfenamide
- Headache
- Stomach pain
- Diarrhoea
- Fatigue
- Nausea
How Tenofovir Alfenamide works
- Tenofovir Alafenamide works by blocking the enzyme that HIV and hepatitis B virus rely on to replicate their genetic material inside the body.
- It is a prodrug meaning it is inactive when first taken and is converted into its active form, tenofovir diphosphate, inside the cells where the virus replicates. This targeted activation allows the medicine to reach high concentrations in the relevant cells at a much lower dose, reducing the amount of drug circulating in the bloodstream.
- Once activated, tenofovir diphosphate closely resembles a natural building block of viral DNA. When the virus attempts to copy its genetic material, it incorporates tenofovir diphosphate into the growing DNA chain. This causes the chain to terminate prematurely, preventing the virus from completing replication.
- Because less of the drug is present in the bloodstream compared to older formulations, Tenofovir Alafenamide is associated with a lower risk of kidney damage and reduced effects on bone mineral density, making it a suitable long-term treatment option.
Certified content
Written By
Doctor of Medicine
Reviewed By
BAMS, FMC, MD Resident
Expert Advice
Dosage Forms Available
- Tenofovir Alafenamide is available in the form of oral tablets. This medicine is administered through the oral route.
Age and Dose Restrictions
- Tenofovir Alafenamide is prescribed for adults and for children who are at least 12 years old.
Contraindications
- Tenofovir Alafenamide should not be taken by individuals who are hypersensitive or allergic to it or any of its components.
Other Medications to Avoid
- Tenofovir Alafenamide can interact with other antiretroviral medication (such as lamivudine, efavirenz), medication for liver problems (such as rifampicin, rifabutin), and medication for kidney problems (like cimetidine, probenecid).
- Prior to starting any prescription, over-the-counter medications or supplements, it is important to consult your doctor.
Overdose and Missed Dose
- If more than the prescribed dose of Tenofovir Alafenamide is taken, seek immediate medical attention. Symptoms of overdose may include severe dizziness, fainting, or changes in heartbeat. There is no specific antidote, and treatment will be supportive based on the symptoms presented.
- If you miss a dose of Tenofovir Alafenamide, take it as soon as you remember. If it is almost time for your next scheduled dose, skip the missed dose and continue with your regular schedule. Do not take two doses at the same time to make up for a missed one. Consistent daily dosing is important for this medicine to remain effective in controlling the infection.
Management of Side Effects
Most side effects of Tenofovir Alafenamide are temporary and generally harmless and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening of any symptoms, please consult your doctor.
- Drinking plenty of fluids may help to manage certain side effects such as headaches.
- Resting and avoiding bright lights may help manage cases of dizziness.
- Eating bland foods and avoiding rich or spicy meals may help manage stomach related side effects.
Use in Driving and Operating Machinery
- Tenofovir Alafenamide may cause dizziness. Driving or operating machinery should be avoided if such side effects are experienced.
Use in Pregnancy and Lactation
- Tenofovir Alafenamide should only be used during pregnancy and breastfeeding if the potential benefit justifies the potential risk to the mother and child. It is always advisable to consult your doctor before use.
Caution in Other Conditions
- Caution should be exercised when using Tenofovir Alafenamide in patients with severe renal (kidney) impairment.
- Patients with liver problems should also exercise caution while taking this medicine.
Special Dietary and Lifestyle Recommendations
- Regular blood tests may be required to monitor your health while using Tenofovir Alafenamide.
- Always practice safe sex, even if you are taking medication for HIV or hepatitis B, to avoid passing the infection to others.
- Regular exercise can strengthen the immune system and improve overall health, which is beneficial for people with chronic infections such as hepatitis B or HIV.
Frequently asked questions
What is Tenofovir Alafenamide used for?
Tenofovir Alafenamide is an antiviral medication used to treat chronic hepatitis B infection in adults and children 12 years and older with stable liver disease. It is also used to manage HIV-1 infection and belongs to the class of antiviral medications known as nucleotide reverse transcriptase inhibitors (NtRTIs).
Can Tenofovir Alafenamide be taken daily?
Yes, Tenofovir Alafenamide is typically taken daily as prescribed by your doctor. Consistent daily use is important for effective management of HIV or hepatitis B.
Can Tenofovir Alafenamide cause liver problems?
Yes, severe liver problems are a potentially serious side effect of Tenofovir Alafenamide. It is important to monitor liver function regularly while using this medicine.
Does Tenofovir Alafenamide affect appetite or mood?
Tenofovir Alafenamide generally does not have a significant impact on appetite or mood. However, if you experience any unusual symptoms, including changes in appetite or mood, consult your doctor.
Can Tenofovir Alafenamide be taken by patients with kidney disease?
Tenofovir Alafenamide is not recommended for patients with severe renal impairment.
Can Tenofovir Alafenamide affect fertility?
There is no strong evidence suggesting that Tenofovir Alafenamide directly affects fertility. If you have concerns about fertility, consult your doctor for personalized advice.
Is Tenofovir Alafenamide available over-the-counter or with a prescription?
Tenofovir Alafenamide is available only with a prescription. You need to see a doctor to obtain this medication and to receive appropriate dosing instructions.
List of medicines for Tenofovir Alfenamide
Company
About UsHealth ArticleHealth StoriesHealth LibraryDiseases & Health ConditionsAyurvedaUnderstanding Generic MedicinesAll MedicinesAll BrandsNeed HelpFAQSecuritySavings CalculatorAdvertise with UsSubscribe
Registered Office Address
Grievance Officer
Download Truemeds
Contact Us
Our customer representative team is available 7 days a week from 9 am - 9 pm.
v4.28.9
2026 - Truemeds | All rights reserved. Our content is for informational purposes only. See additional information.
Our Payment Partners
