I have been taking medication for Hepatitis B every day for 20 years; what are the potential side effects? Also, what kind of medication would you recommend taking to help minimize those side effects?
Shared by a Dr.pharmacist community member on Apr 20, 2026
Your Hepatitis B medication, Tenofovir Disoproxil Fumarate (TDF), is effective, but after 20 years of use it is critical to monitor your kidney and bone health and discuss a potentially safer alternative with your doctor.
Your stack — pharmacist take
- Tenofovir Disoproxil Fumarate (TDF) 300 mg: This is a standard and effective antiviral medication for controlling Hepatitis B virus. However, long-term use for 20 years is specifically associated with an increased risk of side effects affecting your kidneys and bone density.
Optimal routine
- morning: Take one tablet of Tenofovir Disoproxil Fumarate 300 mg. — Taking it at the same time each day, with or without food, helps maintain a steady level of the drug in your body to effectively suppress the virus.
Do
- Ask your prescribing doctor about switching to Tenofovir Alafenamide (TAF), a newer version of your medication that has a significantly lower risk of kidney and bone side effects.
- Ensure you get regular blood and urine tests (at least annually) to monitor your kidney function.
- Discuss getting a bone density scan (DEXA scan) with your doctor to establish a baseline and monitor for any bone loss.
- Talk to your doctor about whether a calcium and vitamin D supplement is appropriate for you to support bone health.
Avoid
- Do not stop taking Tenofovir suddenly without your doctor's supervision, as this can cause a severe and dangerous flare-up of your Hepatitis B.
- Avoid long-term or high-dose use of over-the-counter pain relievers like ibuprofen (Advil, Motrin) and naproxen (Aleve), as they can add extra strain to the kidneys.
Pharmacist's product picks
Tenofovir Alafenamide (TAF)
This is a prescription-only alternative to your current medication. It is a newer formulation that is much gentler on the kidneys and bones, making it a common choice for patients on long-term therapy. You must discuss this with your doctor to see if it's right for you.
Key: Tenofovir Alafenamide
Calcium with Vitamin D supplement
Because Tenofovir Disoproxil Fumarate can decrease bone mineral density over time, supplementing with calcium and vitamin D may help support your bone health. Ask your doctor for a recommended dose.
Key: Calcium, Vitamin D3 (Cholecalciferol)
Pharmacist may ask
- When was your last lab test to check your kidney function (e.g., serum creatinine or eGFR)?
- Have you ever had a bone density (DEXA) scan?
- Are you taking any other prescription medications, over-the-counter drugs, or supplements?
- Have you noticed any new symptoms that prompted you to ask about side effects today?
This is a draft consult for pharmacist review and is not medical advice. Do not make any changes to your prescription medications without consulting your prescribing physician.
References
- 1.FDA Drug Label — Biktarvy
FDA DailyMed: Biktarvy · FDA
- 2.FDA Drug Label — Take Action
FDA DailyMed: Take Action · FDA
- 3.EASL 2017 Clinical Practice Guidelines on the management of hepatitis B virus infection.
European Association for the Study of the Liver, Journal of hepatology, 2017 · PubMed
- 4.Chronic Hepatitis B Infection: A Review.
Tang LSY, Covert E, Wilson E, et al., JAMA, 2018 · PubMed
- 5.Chronic hepatitis B in pregnant women: Current trends and approaches.
Belopolskaya M, Avrutin V, Kalinina O, et al., World journal of gastroenterology, 2021 · PubMed
- 6.Efficacy and safety of antiviral prophylaxis during pregnancy to prevent mother-to-child transmission of hepatitis B virus: a systematic review and meta-analysis.
Funk AL, Lu Y, Yoshida K, et al., The Lancet. Infectious diseases, 2021 · PubMed
Educational guidance only, not a substitute for personal medical advice. Always consult your pharmacist or healthcare provider before starting a new medication.