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Tafnat Tablet

Tenofovir Alafenamide (25mg)

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Tafnat Tablet is used in the treatment of chronic hepatitis B virus (HBV) infection. It prevents the multiplication of viruses in human cells. This stops the virus from producing new viruses and clears up your infection.

Written By Dr. Swati Mishra, BDS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 29 Apr 2026 | 01:02 PM (IST)

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30 tablets

Gurgaon

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General Information

Contains

Tenofovir Alafenamide (25mg)

Marketer

Natco Pharma Ltd

Storage

Store below 30°C

The content is shown in English

Product introduction

Tafnat Tablet should be used in the dose and duration as advised by your doctor. Do not skip any doses, and finish the full course of treatment even if you feel better. Take it with food, as this increases the absorption of the medicine into the body. It is important to keep taking them until your doctor tells you it is safe to stop.

Common side effects of this medicine include headache, diarrhea, nausea, joint pain, abdominal pain, and indigestion. Please consult your doctor if it persists for a longer duration. These are usually not serious, but tell your doctor if they bother you or do not go away. Rarely, some people may experience a skin reaction or liver damage. Your doctor will closely monitor you for these in the initial period of treatment.

Before taking it, tell your doctor if you have any skin problems or liver or kidney disease. While using it, you may need regular blood tests to check your blood counts and liver function. Avoid drinking alcohol, as it may increase your risk of liver damage. Pregnant or breastfeeding mothers should consult their doctor before using this medicine. Do not have unprotected sex or share personal items like razors or toothbrushes if you are HIV positive. Talk to your doctor about safe ways, like condoms, to prevent HIV transmission during sex.

Uses of Tafnat Tablet

Treatment of Hepatitis B virus (HBV) infection

Benefits of Tafnat Tablet

Treatment of Hepatitis B virus (HBV) infection
Chronic hepatitis B virus infection is a serious liver infection that has been there for at least 6 months and is still not cured. Tafnat Tablet helps treat this infection effectively. It lowers the chances of complications, such as new infections, and improves one’s quality of life. If this infection is not treated, it can lead to severe liver damage, which can cause other life-threatening problems, such as liver failure, or may also be fatal.

Side effects of Tafnat Tablet

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Tafnat

Headache
Diarrhea
Nausea
Fatigue
Abdominal pain
Cough
Back pain
Indigestion
Joint pain

How to use Tafnat Tablet

Take this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Tafnat Tablet should be taken with or after food.

How Tafnat Tablet works

Tafnat Tablet is an antiviral medication. It prevents the multiplication of the virus in human cells. This stops the virus from producing new viruses and clears up your infection.

All substitutes for Tafnat Tablet

For information purposes only. Consult a doctor before taking any medicine.

Quick tips

Take it with food, as this increases the absorption of the medicine into the body.
Tafnat Tablet may cause dizziness or sleepiness. Do not drive or do anything requiring concentration until you know how it affects you.
You may still develop infections or other illnesses associated with viral infection while taking this medication.
You can also pass on HBV to others. Don't share needles or personal items that can have blood or body fluids on them.
During treatment and for at least six months after stopping this medicine, regular blood tests are needed to monitor your liver function, level of hepatitis B virus, and blood cells in your blood.

Safety advice

Alcohol

CONSULT YOUR DOCTOR

It is not known whether it is safe to consume alcohol with Tafnat Tablet. Please consult your doctor.

Pregnancy

SAFE IF PRESCRIBED

Tafnat Tablet is generally considered safe to use during pregnancy. Animal studies do not indicate harmful effects. However, there are limited human studies.

Breast feeding

CONSULT YOUR DOCTOR

Information regarding the use of Tafnat Tablet during breastfeeding is not available. Please consult your doctor.

Driving

UNSAFE

Tafnat Tablet may decrease alertness, affect your vision, or make you feel sleepy and dizzy. Do not drive if these symptoms occur.

Kidney

CAUTION

Tafnat Tablet should be used with caution in patients with severe kidney disease. Dose adjustment may be needed.

Liver

CONSULT YOUR DOCTOR

There is limited data available on the use of Tafnat Tablet in patients with liver disease.

Interaction with drugs

Taking Tafnat with any of the following medicines can modify the effect of either of them and cause some undesirable side effects

Severe

Fosphenytoin (Injection Route)

Do not use Tenofovir Alafenamide with Fosphenytoin. If concurrent use is essential, talk to your doctor. Fosphenytoin may reduce blood levels of Tenofovir Alafenamide.

Severe

Oxcarbazepine (Oral Route)

Do not use Tenofovir Alafenamide with Oxcarbazepine. If concurrent use is essential, talk to your doctor. Oxcarbazepine may reduce blood levels of Tenofovir Alafenamide.

Severe

Phenobarbitone (Injection Route)

Do not use Tenofovir Alafenamide with Phenobarbitone. If concurrent use is essential, talk to your doctor. Phenobarbitone may reduce blood levels of Tenofovir Alafenamide.

Severe

Phenobarbitone (Oral Route)

Do not use Tenofovir Alafenamide with Phenobarbitone. If concurrent use is essential, talk to your doctor. Phenobarbitone may reduce blood levels of Tenofovir Alafenamide.

Severe

Phenytoin (Injection Route)

Do not use Tenofovir Alafenamide with Phenytoin. If concurrent use is essential, talk to your doctor. Phenytoin may reduce blood levels of Tenofovir Alafenamide.

Frequently asked questions

Does Tafnat Tablet prevent the passing of HIV-1 and HBV to others?

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

Is Tafnat Tablet safe?

Tafnat Tablet 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.

How should I take Tafnat Tablet?

You should take Tafnat Tablet in the dose and duration advised by your doctor. Tafnat Tablet 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.

For how long do I need to take Tafnat Tablet for HBV infection?

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 lifelong.

I vomited after taking Tafnat Tablet. What should I do?

If vomiting occurs within 1 hour of taking Tafnat Tablet, then you should take another dose. However, if you vomit more than an hour after taking Tafnat Tablet, then you need not take another dose. Consult your doctor if you have vomiting every time you take Tafnat Tablet or if the vomiting persists for a longer duration.

What should I do if I forget to take Tafnat Tablet?

If you forget to take Tafnat Tablet within 12 hours of the time you usually take it, take Tafnat Tablet with food as soon as possible and resume the normal dosing schedule. However, if it has been more than 12 hours since you took the medicine and it is almost time for the next dose, skip the missed dose and simply resume the usual dosing schedule.

Fact Box

Chemical Class

Alpha amino acid derivative

Habit Forming

Therapeutic Class

ANTI INFECTIVES

Action Class

Nucleoside/Nucleotide Reverse Transcriptase Inhibitors (NRTIs)

Related lab tests

Hepatitis B (Core) IgM Antibody

Hepatitis B s (Surface) Antigen

Hepatitis C Virus Total Antibody

References

User feedback

Patients taking Tafnat Tablet

Once A Day

100%

What are you using Tafnat Tablet for?

Chronic hepatitis B virus (HBV) infection

100%

How much was the improvement?

Average

40%

Excellent

38%

Poor

21%

What were the side-effects while using Tafnat Tablet?

No Side Effect

71%

Diarrhea

Nausea

Rash

Vomiting

How do you take Tafnat Tablet?

With food

67%

With or without food

33%

Please rate Tafnat Tablet on price

Expensive

61%

Average

33%

Not Expensive

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Disclaimer

Tata 1mg's sole intention is to ensure that its consumers get information that is expert-reviewed, accurate and trustworthy. However, the information contained herein should NOT be used as a substitute for the advice of a qualified physician. The information provided here is for informational purposes only. This may not cover everything about particular health conditions, lab tests, medicines, all possible side effects, drug interactions, warnings, alerts, etc. Please consult your doctor and discuss all your queries related to any disease or medicine. We intend to support, not replace, the doctor-patient relationship.

Marketer details

Name: Natco Pharma Ltd
Address: Natco House, Road No.2, Banjara Hills, Hyderabad-500 034, India

Vendor Details

Country of origin: India
A licensed vendor partner from your nearest location will deliver Tafnat Tablet. Once the pharmacy accepts your order, the details of the pharmacy will be shared with you. Acceptance of your order is based on the validity of your doctor's ℞ and the availability of this medicine.

In case of any issues, contact us

Email ID: [email protected]
Phone Number: 0124-4166666
Address: 5th Floor Tower - B of the Presidency Building, 46/4 Mehrauli Gurgaon Road, Sector 14, Gurugram, Haryana-122001, India

Lab tests offered by us

Why we need a prescription?

Tafnat Tablet

Save more with additional offers

General Information

Contains

Marketer

Storage

Product introduction

Uses of Tafnat Tablet

Benefits of Tafnat Tablet

Side effects of Tafnat Tablet

How to use Tafnat Tablet

How Tafnat Tablet works

All substitutes for Tafnat Tablet

Tenvir-AF Tablet

Tenohep AF Tablet

Durataf 25mg Tablet

Hepbest Tablet

Tentide AF 25mg Tablet

Quick tips

Safety advice

Alcohol

Pregnancy

Breast feeding

Driving

Kidney

Liver

Interaction with drugs

Fosphenytoin (Injection Route)

Oxcarbazepine (Oral Route)

Phenobarbitone (Injection Route)

Phenobarbitone (Oral Route)

Phenytoin (Injection Route)

Frequently asked questions

Does Tafnat Tablet prevent the passing of HIV-1 and HBV to others?

Is Tafnat Tablet safe?

How should I take Tafnat Tablet?

For how long do I need to take Tafnat Tablet for HBV infection?

I vomited after taking Tafnat Tablet. What should I do?

What should I do if I forget to take Tafnat Tablet?

Fact Box

Chemical Class

Habit Forming

Therapeutic Class

Action Class

Related lab tests

Hepatitis B (Core) IgM Antibody

Hepatitis B s (Surface) Antigen

Hepatitis C Virus Total Antibody

References

User feedback

Patients taking Tafnat Tablet

What are you using Tafnat Tablet for?

How much was the improvement?

What were the side-effects while using Tafnat Tablet?

How do you take Tafnat Tablet?

Please rate Tafnat Tablet on price

Want to know more

Have issue with the content

Disclaimer

Marketer details

Vendor Details

In case of any issues, contact us

Lab tests offered by us

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