Tenofovir Alafenamide
About Tenofovir Alafenamide
Tenofovir Alafenamide is a prescription medication used to treat long-term (chronic) hepatitis B virus infection in adults and adolescents. It helps manage the virus, preventing it from multiplying and causing severe liver problems. This medication is essential for keeping the viral load in your body as low as possible over time.
For the best results, you must take Tenofovir Alafenamide consistently every single day at the same time. You can take this tablet with or without food, but keeping a strict routine helps you remember your daily dose. Supporting your treatment with liver-friendly lifestyle choices, such as avoiding alcohol and eating a balanced diet, can further support your long-term health.
While taking Tenofovir Alafenamide, some people may experience mild side effects like headaches, cough, or joint pain. However, you must contact your healthcare provider immediately if you experience signs of severe liver issues, such as yellowing of your skin or eyes, dark urine, or severe stomach pain.
Before you begin taking this medicine, inform your doctor if you have other health conditions, especially kidney problems or an untreated HIV infection. Do not take this if you are allergic to any of its ingredients, or if you have untreated HIV, as taking this medicine alone can make the HIV virus much harder to treat in the future.
This medicine can interact with certain other treatments, such as tuberculosis drugs or herbal supplements, which can reduce its effectiveness. If you are pregnant, breastfeeding, or an older adult, consult your doctor to discuss whether this medication is safe for your specific situation
Uses of Tenofovir Alafenamide
Medicinal Benefits
Tenofovir Alafenamide provides several clinically proven benefits that help protect your long-term health and well-being:
- Reduces Viral Activity: By keeping the virus from replicating, it lowers the amount of hepatitis B virus in your blood to highly manageable or undetectable levels.
- Protects Liver Health: It significantly lowers the risk of developing severe complications like liver scarring (cirrhosis) or liver failure, helping your liver function normally.
- Kidney and Bone Safety: Compared to older antiviral options, this formulation is highly targeted, meaning it delivers the active treatment directly to liver cells while being gentler on your kidneys and bones.
Directions for Use
- Tenofovir Alafenamide can be taken with meals for better effectiveness.
- It is usually taken once daily or as advised by your doctor.
- Swallow Tenofovir Alafenamide as a whole with a glass of water.
- Do not break, chew, or crush it.
Storage
Side Effects of Tenofovir Alafenamide
Common Side Effects (Usually mild):
- Headache
- Nausea or mild stomach upset
- Tiredness or fatigue
- Back pain or joint pain
Serious Side Effects (Call a doctor right away):
- Signs of a severe allergic reaction, such as swelling of the face, lips, tongue, or throat, or difficulty breathing
- Signs of liver damage, including yellowing of the skin or eyes (jaundice), dark-colored urine, pale stools, or severe upper stomach pain
- Signs of lactic acidosis, such as unusual muscle pain, trouble breathing, deep and rapid breathing, cold hands or feet, or feeling very weak and dizzy
Medicines Containing this Salt
View AllDrug Warnings
Do not stop taking this medicine abruptly: Stopping your treatment suddenly can cause a severe, life-threatening flare-up of your hepatitis B infection. Always consult your doctor before making any changes.
- Check your HIV status: Ensure you are tested for HIV before starting Tenofovir Alafenamide. If you have undiagnosed or untreated HIV, taking this medicine alone can cause the HIV virus to become resistant to future treatments.
- Monitor your lab results: Attend all scheduled appointments for blood work. Your doctor will need to monitor your liver function, viral load, and kidney health regularly.
- Prevent spreading the virus: Remember that taking Tenofovir Alafenamide does not prevent you from passing hepatitis B to others through sexual contact or blood exposure. Use appropriate protection and do not share needles or personal items like razors.
- Inspect your tablets: Before taking your daily dose, inspect the tablet. Do not take it if it is discoloured, crumbling, or if the packaging has been damaged.
Drug Interactions
Inform your doctor if you are using any of the following medicines, as they may interact with Tenofovir Alafenamide.
- Antiseizure medicines (like carbamazepine, phenytoin, or phenobarbital): These can reduce the levels of Tenofovir Alafenamide in your blood, making it less effective at fighting the virus.
- Tuberculosis medications (like rifampin or rifabutin): These drugs can significantly lower the concentration of Tenofovir Alafenamide in your body, reducing its ability to control the infection.
- Herbal remedies (such as St. John's wort): Taking this supplement can lower the effectiveness of your antiviral treatment.
Drug-Drug Interactions Checker List:
Safety Advice
Alcohol
unsafeAvoid drinking alcohol. Consuming alcohol while using Tenofovir Alafenamide may worsen the condition.
Pregnancy
cautionTenofovir Alafenamide is not recommended during pregnancy. However, your doctor may prescribe it for you during pregnancy if he/she feels that the benefit to you outweighs the risk. You should not take Tenofovir Alafenamide without the doctor's advice.
Breast Feeding
cautionConsult your doctor, and there is no substantial research yet on the use of Tenofovir Alafenamide in breastfeeding/nursing mothers.
Driving
cautionTenofovir Alafenamide can cause dizziness. If you feel dizzy when taking Tenofovir Alafenamide, do not drive and use any tools or machines.
Liver
cautionConsult your doctor before taking Tenofovir Alafenamide if you have a liver impairment or any concerns regarding this. Your doctor will weigh the benefits and any potential risks before prescribing them to you.
Kidney
cautionConsult your doctor before taking Tenofovir Alafenamide if you have kidney impairment or any concerns regarding this. Your doctor will weigh the benefits and any potential risks before prescribing them to you.
Children
unsafeShould not use Tenofovir Alafenamide in children below 12 years of age.
Habit Forming
Diet & Lifestyle Advise
Supporting your liver health while taking Tenofovir Alafenamide can improve your overall treatment outcomes. Consider these evidence-based tips:
- Avoid alcohol entirely: Alcohol puts extra strain on your liver and can speed up liver damage, countering the benefits of your medication.
- Eat a liver-friendly diet: Focus on whole foods, including fresh vegetables, fruits, lean proteins, and whole grains. Minimise processed foods, excess sugars, and saturated fats.
- Stay hydrated: Drink plenty of water throughout the day to help your kidneys filter waste and process your medication efficiently.
- Maintain a healthy weight: Being overweight can cause fat buildup in the liver, which can worsen hepatitis B complications. Regular, moderate exercise can help manage your weight.
- Avoid raw or undercooked shellfish: People with chronic liver conditions are highly susceptible to severe infections from bacteria sometimes found in raw seafood.
Special Advise
If you take Tenofovir Alafenamide, your doctor may regularly monitor liver function, kidney function, and bone density.
Patients Concern
Disease/Condition Glossary
Hepatitis B: Hepatitis B is a potentially fatal liver infection caused by the hepatitis B virus (HBV). It is highly contagious (spreads from one person to another) and spreads by intimate contact with an infected individual, direct contact with infected blood, use of a contaminated needle, use of an infected razor/other personal objects, or transmission from mother to baby during birth. The virus can survive outside the body for up to 7 days. Chronic hepatitis B develops slowly, and symptoms may not be obvious until complications arise. Hepatitis B symptoms might occur three months after being exposed to the infection and can continue for two to twelve weeks. Chronic hepatitis B consequences include liver failure, liver cancer, and liver cirrhosis (scarring). Hepatitis B can be prevented by taking the vaccination.
FAQs
Tenofovir Alafenamide belongs to the group of medicines known as ‘antiviral medicines used to treat chronic hepatitis B virus (HBV) infection.
Tenofovir Alafenamide contains ‘tenofovir alfenamide’. It inhibits HBV replication by merging into viral DNA via HBV reverse transcriptase, resulting in the termination of the DNA chain. This prevents the virus from producing new viruses and cleans up your infection.
No, Tenofovir Alafenamide is a prescribed medication given by a physician for treating HBV infection or Chronic hepatitis B. It is recommended not to take it on your own.
Tenofovir Alafenamide should be taken in the dose and for the duration prescribed by your doctor based on your medical condition.
The main symptoms include yellowing of eyes and skin, flu-like symptoms, pale stools and dark-coloured urine.
A blood test (HBsAg blood test) can be used to determine if you have hepatitis B or have ever had it.
Practising safe sex and other lifestyle changes along with Tenofovir Alafenamide might lower the risk of HIV transmission. However, it may not prevent the spread of hepatitis B virus (HBV) to other people.
Yes, Tenofovir Alafenamide is safe if taken in the dose and duration prescribed by the doctor.
Tenofovir Alafenamide should be swallowed as a whole with water; do not crush or chew it.
Take another dose of Tenofovir Alafenamide if you have vomited within an hour of taking the medicine. However, you may not need to take another dose if it has been more than an hour. Take the next dose at the scheduled time.
If you miss a dose of Tenofovir Alafenamide take it as soon as you remember. However, if it is almost time for the scheduled dose, skip the missed dose and take the next dose at the scheduled time.
Tenofovir Alafenamide may cause side effects like headaches, diarrhoea, vomiting, feeling sick (nausea), and rash. Most of these side effects may not require medical attention and gradually resolve over time. However, if the side effects persist or worsen, please consult your doctor.
No, Tenofovir Alafenamide does not cure chronic hepatitis B, but it helps manage the condition by stopping the virus from multiplying. This lowers the amount of virus in your body and prevents severe liver damage. Talk to your doctor to understand your long-term treatment plan.
If you are pregnant or planning to become pregnant, you should discuss this with your healthcare provider. Your doctor will weigh the benefits of controlling your hepatitis B infection against any potential risks to the baby. Talk to your doctor for personalised guidance.
It is highly recommended that you avoid alcohol completely while taking Tenofovir Alafenamide. Alcohol causes additional stress and damage to your liver, which can worsen hepatitis B and make your treatment less effective. Talk to your doctor about safe lifestyle choices.
Chronic hepatitis B is a long-term condition, and most patients need to take Tenofovir Alafenamide for several years, or even indefinitely. Stopping the medication early can cause the virus to become active again and lead to severe liver flares. Talk to your doctor before making any changes.
Some medications, including certain antiseizure drugs, antibiotics, and herbal supplements, can interfere with how Tenofovir Alafenamide works. Always provide your doctor and pharmacist with a complete list of everything you take, including over-the-counter products. Talk to your doctor or pharmacist before starting any new medicine.
Watch for symptoms like yellowing of your skin or the whites of your eyes, unusually dark urine, severe abdominal pain, persistent nausea, and unusual fatigue. If you notice any of these signs, seek medical attention immediately. Talk to your doctor if you experience any unusual symptoms.
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