Medication Information Leaflet
Tenofovir Alafenamide (TAF) and Tenofovir Disoproxil Fumarate (TDF) are medications used to treat infections caused by viruses such as Hepatitis B and human immunodeficiency virus (HIV). They work by preventing such viruses from reproducing and hence reducing the amount of the virus in the body.
TAF and TDF are not cures for hepatitis and HIV. They must be taken consistently every day to slow the progression of the disease.
If you forget to take a dose, take it as soon as you remember. Then take your next dose at the usual time. Do not take two doses to make up for the missed dose.
Inform your healthcare professional if:
Stop your medication and see your healthcare professional immediately if you experience any symptoms of a drug allergy include one or more of the following:
Rarely, TAF and TDF can cause a build-up of acid in your blood (lactic acidosis). Consult your doctor if you experience signs of lactic acidosis such as:
TAF and TDF can also rarely cause liver problems. Consult your doctor if you experience signs of liver problems such as:
Inform your healthcare professional if you are currently taking any one of the following medications:
Store in a cool and dry place, away from direct sunlight. Keep this medication away from children.
Pack the medication into a bag and bring it back to the pharmacy where you received the medication from.
Please take note that the above is not a complete list of all possible side effects. If you have any concerns about your medication or if you have other side effects that you think are caused by this medication, please consult your doctor or pharmacist.
If you take more than the recommended dose, please seek medical advice immediately. The information provided on this page does not replace information from your healthcare professional. Please consult your healthcare professional for more information.
This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (National Healthcare Group, National University Health System and SingHealth), community pharmacies (Guardian, Unity and Watsons) and Pharmaceutical Society of Singapore. The content does not reflect drug availability and supply information in pharmacies and healthcare institutions. You are advised to check with the respective institutions for such information.
Last updated on August 2023
This article was last reviewed on Thursday, August 31, 2023