Tenofovir Disoproxil Viatris

NOTICE: This Consumer Medicine Information (CMI) is intended for persons living in Australia.

tenofovir disoproxil maleate 300 mg
CONSUMER MEDICINE INFORMATION

What is in this leaflet

Read this leaflet carefully before you start taking TENOFOVIR DISOPROXIL VIATRIS. Also, read it each time you get your TENOFOVIR DISOPROXIL VIATRIS prescription refilled, in case something has changed.
This information does not take the place of talking with your doctor or pharmacist when you start this medicine and at check-ups. You should stay under a doctor's care when taking TENOFOVIR DISOPROXIL VIATRIS.
It is extremely important that you do not change or stop your medicine without first talking with your doctor or pharmacist (see HOW SHOULD I TAKE TENOFOVIR DISOPROXIL VIATRIS and WHAT ARE THE POSSIBLE SIDE EFFECTS OF TENOFOVIR DISOPROXIL VIATRIS).
Talk to your doctor or pharmacist if you have any questions about TENOFOVIR DISOPROXIL VIATRIS.

What TENOFOVIR DISOPROXIL VIATRIS is used for

Tenofovir disoproxil maleate is an antiviral medication used to treat two different viruses;
Chronic Hepatitis B (CHB) and
Human Immunodeficiency Virus (HIV) infection.
TENOFOVIR DISOPROXIL VIATRIS is a type of medicine called HBV polymerase inhibitor and a nucleotide analogue reverse transcriptase inhibitor (NRTI).

How TENOFOVIR DISOPROXIL VIATRIS works in the Treatment of CHB:

TENOFOVIR DISOPROXIL VIATRIS is used to treat CHB (an infection with hepatitis B virus [HBV]) in adults and paediatric patients aged 12 years and older and weighing at least 35 kg.
TENOFOVIR DISOPROXIL VIATRIS works by interfering with the normal working of enzymes (HBV DNA polymerase) that are essential for HBV to reproduce itself. TENOFOVIR DISOPROXIL VIATRIS may help lower the amount of hepatitis B virus in your body by lowering the ability of the virus to multiply and infect new liver cells and can improve the inflammation and scar tissue caused by the hepatitis B virus in your liver.
Lowering the amount of virus in your body may reduce the chance of developing cirrhosis, liver failure and liver cancer.
We do not know how long TENOFOVIR DISOPROXIL VIATRIS may help treat your hepatitis.
Sometimes viruses change in your body and medicines no longer work. This is called drug resistance.

How TENOFOVIR DISOPROXIL VIATRIS works in the Treatment of HIV Infection:

TENOFOVIR DISOPROXIL VIATRIS is also used to treat HIV infection in adults and paediatric patients aged 12 years and older and weighing at least 35 kg.
TENOFOVIR DISOPROXIL VIATRIS is always used in combination with other anti-HIV medicines to treat people with HIV-1 infection.
HIV infection destroys CD4 (T) cells, which are important to the immune system. After a large number of T cells are destroyed, acquired immune deficiency syndrome (AIDS) develops.
TENOFOVIR DISOPROXIL VIATRIS helps to block HIV-1 reverse transcriptase, a chemical (enzyme) in your body that is needed for HIV-1 to multiply. TENOFOVIR DISOPROXIL VIATRIS lowers the amount of HIV-1 in the blood (called viral load) and may help to increase the number of T cells (called CD4 cells). Lowering the amount of HIV-1 in the blood lowers the chance of death or infections that happen when your immune system is weak (opportunistic infections).
You do not have to have HIV infection to be treated with TENOFOVIR DISOPROXIL VIATRIS for HBV and vice versa.

Use in Children

TENOFOVIR DISOPROXIL VIATRIS is for adults and paediatric patients aged 12 years and older and weighing at least 35 kg.

Does TENOFOVIR DISOPROXIL VIATRIS cure HIV or AIDS?

TENOFOVIR DISOPROXIL VIATRIS does not cure HIV infection or AIDS.
The long-term effects of TENOFOVIR DISOPROXIL VIATRIS are not known at this time. People taking TENOFOVIR DISOPROXIL VIATRIS may still get opportunistic infections or other conditions that happen with HIV-1 infection.
Opportunistic infections are infections that develop because the immune system is weak.
Some of these conditions are:
pneumonia,
herpes virus infections, and
Mycobacterium avium complex (MAC) infections.

Does TENOFOVIR DISOPROXIL VIATRIS reduce the risk of passing HIV-1 or HBV to others?

TENOFOVIR DISOPROXIL VIATRIS does not reduce the risk of passing HIV-1 or HBV to others through sexual contact or blood contamination.
Continue to practice safe sex and do not use or share dirty needles.

Before you take TENOFOVIR DISOPROXIL VIATRIS

Who must not take it

Together with your doctor, you need to decide whether TENOFOVIR DISOPROXIL VIATRIS is right for you.
Do not take TENOFOVIR DISOPROXIL VIATRIS if:
you are allergic to tenofovir disoproxil maleate, tenofovir disoproxil fumarate or any of the ingredients listed at the end of this leaflet under the heading PRODUCT DESCRIPTION.
you are already taking any other medicines containing tenofovir disoproxil maleate or tenofovir disoproxil fumarate.
you are already taking adefovir dipivoxil to treat hepatitis B virus (HBV) infection.
you are already taking tenofovir alafenamide to treat HIV or hepatitis B virus (HBV) infection.

Before you start to take it:

Tell your doctor if you are pregnant or planning to become pregnant.
The effects of TENOFOVIR DISOPROXIL VIATRIS on pregnant women or their unborn babies are not known.
Tell your doctor if you are breastfeeding.
Do not breast-feed if you are taking TENOFOVIR DISOPROXIL VIATRIS. The active substance in this medicine (tenofovir disoproxil maleate) has been found in breast milk at low concentrations.
Do not breast-feed if you have HIV or HBV.
If you are a woman who has or will have a baby, talk with your doctor or pharmacist about the best way to feed your baby. If your baby does not already have HIV or HBV, there is a chance that the baby can get HIV or HBV through breast-feeding.
Tell your doctor if you have kidney problems.
Tell your doctor if you have bone problems.
Tell your doctor if you have liver problems, including HBV and hepatitis C virus (HCV).
Tell your doctor if you have HIV infection.
Tell your doctor or pharmacist about all your medical conditions.

Taking other medicines

Tell your doctor or pharmacist about all the medicines you take, including prescription and non- prescription medicines and dietary supplements.
Especially tell your doctor or pharmacist if you take:
VOSEVI (sofosbuvir/ velpatasvir/ voxilaprevir), HARVONI (ledipasvir/sofosbuvir) or EPCLUSA (sofosbuvir/ velpatasvir) to treat your HCV infection. These medicines may increase the amount of TENOFOVIR DISOPROXIL VIATRIS in your blood, which could result in additional or more intense side effects (see SIDE EFFECTS).
VIDEX, VIDEX EC (didanosine); TENOFOVIR DISOPROXIL VIATRIS may increase the amount of VIDEX in your blood. You may need to be followed more carefully if you are taking VIDEX and TENOFOVIR DISOPROXIL VIATRIS together. If you are taking VIDEX and TENOFOVIR DISOPROXIL VIATRIS together, your doctor may need to reduce your dose of VIDEX.
REYATAZ (atazanavir sulfate) or KALETRA (lopinavir/ritonavir); These medicines may increase the amount of TENOFOVIR DISOPROXIL VIATRIS in your blood, which could result in more side effects (see SIDE EFFECTS). You may need to be followed more carefully if you are taking TENOFOVIR DISOPROXIL VIATRIS and REYATAZ or KALETRA together. TENOFOVIR DISOPROXIL VIATRIS may decrease the amount of REYATAZ in your blood. If you are taking TENOFOVIR DISOPROXIL VIATRIS and REYATAZ together you should also be taking NORVIR (ritonavir).
It is a good idea to keep a complete list of all the medicines that you take.
Make a new list when medicines are added or stopped. Give copies of this list to your doctor or pharmacist every time you visit your doctor or fill a prescription.

How to take TENOFOVIR DISOPROXIL VIATRIS

Stay under a doctor's care when taking TENOFOVIR DISOPROXIL VIATRIS.
Do not change your treatment or stop treatment without first talking with your doctor.
Take TENOFOVIR DISOPROXIL VIATRIS exactly as your doctor prescribed it.
Follow the directions from your doctor or pharmacist, exactly as written on the label.
Set up a dosing schedule and follow it carefully.

How much to take

The usual dose of TENOFOVIR DISOPROXIL VIATRIS is one tablet once a day.
If you have kidney problems, your doctor may recommend that you take TENOFOVIR DISOPROXIL VIATRIS less frequently.

How to take it

TENOFOVIR DISOPROXIL VIATRIS is best taken with a meal or just afterwards, however taking it without food should not reduce the effectiveness of the medicine.
If you are taking TENOFOVIR DISOPROXIL VIATRIS to treat HIV or if you have HIV and HBV coinfection and are taking TENOFOVIR DISOPROXIL VIATRIS, always take TENOFOVIR DISOPROXIL VIATRIS in combination with other anti-HIV medicines.
TENOFOVIR DISOPROXIL VIATRIS and other medicines like TENOFOVIR DISOPROXIL VIATRIS, may be less likely to work in the future if you are not taking TENOFOVIR DISOPROXIL VIATRIS with other anti-HIV medicines because you may develop resistance to those medicines. If you have any questions about what medicines you should or should not be taking, please see your doctor or pharmacist.
If you have been given TENOFOVIR DISOPROXIL VIATRIS to treat CHB, you are advised to get a HIV test before you start taking TENOFOVIR DISOPROXIL VIATRIS and at any time after that when there is a chance you were exposed to HIV.
When your TENOFOVIR DISOPROXIL VIATRIS supply starts to run low, get more from your doctor or pharmacist.
This is very important because the amount of virus in your blood may increase if the medicine is stopped for even a short time. The virus may develop resistance to TENOFOVIR DISOPROXIL VIATRIS, and may become harder to treat. If you are taking TENOFOVIR DISOPROXIL VIATRIS to treat CHB, stopping treatment may result in very severe hepatitis and serious liver problems (see SIDE EFFECTS).
Only take medicine that has been prescribed specifically for you.
Do not give TENOFOVIR DISOPROXIL VIATRIS to others or take medicine prescribed for someone else.

If you forget to take TENOFOVIR DISOPROXIL VIATRIS?

It is important that you do not miss any doses.
If you miss a dose of TENOFOVIR DISOPROXIL VIATRIS, take it as soon as possible and then take your next scheduled dose at its regular time.
If it is almost time for your next dose, do not take the missed dose. Wait and take the next dose at the regular time. Do not double the next dose.

If you take too much (overdose)?

Immediately telephone your doctor or Poisons Information Centre (telephone 13 11 26), or in New Zealand the Poisons Centre (telephone 0800 POISON or 0800 764 766) or go to the accident and emergency department at your nearest hospital if you think you or anyone else may have taken too many TENOFOVIR DISOPROXIL VIATRIS tablets. Do this even if there are no signs of discomfort or poisoning. This may need urgent medical attention.

While you are taking TENOFOVIR DISOPROXIL VIATRIS

Things you must not do

Do not breast-feed. See "Before you start to take it".

Things to be careful of

Some patients taking TENOFOVIR DISOPROXIL VIATRIS have experienced dizziness. Make sure you know how you react to TENOFOVIR DISOPROXIL VIATRIS before you drive a car, operate machinery or do anything else that could be dangerous if you are dizzy.

SIDE EFFECTS

In clinical studies in patients with HIV: The most common side effects of TENOFOVIR DISOPROXIL VIATRIS are:
diarrhoea
nausea
vomiting
dizziness
Less common side effects include:
flatulence (intestinal gas)
In clinical studies in patients with CHB, the only common side effect of TENOFOVIR DISOPROXIL VIATRIS is:
nausea
Marketing experience has shown other side effects reported since tenofovir disoproxil has been marketed include:
low blood phosphate
shortness of breath
increased liver enzymes
increased amylase
inflammation of the liver
stomach pain
inflammation of the pancreas
rash and
weakness
TENOFOVIR DISOPROXIL VIATRIS may cause the following other side effects
Kidney Problems
Some patients treated with tenofovir disoproxil have had kidney problems. If you have had kidney problems in the past or need to take another drug that can cause kidney problems, your doctor may need to perform additional blood tests. Kidney problems may be associated with muscle problems and softening of the bones.
Changes in Bone Mineral Density
Laboratory tests show changes in the bones of patients treated with tenofovir disoproxil. It is not known whether long-term use of TENOFOVIR DISOPROXIL VIATRIS will cause damage to your bones. If you have had bone problems in the past, your doctor may need to perform additional tests or may suggest additional medication.
Lactic Acidosis
Some patients taking antiviral drugs like TENOFOVIR DISOPROXIL VIATRIS have developed a condition called lactic acidosis (a build-up in the blood of lactic acid, the same substance that causes your muscles to burn during heavy exercise). Symptoms of lactic acidosis include nausea, vomiting, unusual or unexpected stomach discomfort, and weakness.
If you notice these symptoms or if your medical condition changes suddenly, call your doctor right away.
Hepatic Flares
It is extremely important that you do not stop taking TENOFOVIR DISOPROXIL VIATRIS without your doctor's advice. If you have Hepatitis B infection or HIV and HBV infection together, you may have a "flare-up" of Hepatitis B if you stop taking TENOFOVIR DISOPROXIL VIATRIS, where the disease suddenly returns in a worse way than before. This flare- up may lead to liver failure and possibly liver transplantation or death.
After stopping TENOFOVIR DISOPROXIL VIATRIS, tell your doctor immediately about any new, unusual, or worsening symptoms that you notice after stopping treatment. After you stop taking TENOFOVIR DISOPROXIL VIATRIS, your doctor will still need to check your health and take blood tests to check your liver for several months.
There have been other side effects in patients taking tenofovir disoproxil.
However, these side effects may have been due to other medicines that patients were taking or to the illness itself.
Some of these side effects can be serious.
This list of side effects is not complete. If you have questions about side effects, ask your doctor or pharmacist.
You should report any new or continuing symptoms to your doctor or pharmacist right away.
Your doctor or pharmacist may be able to help you manage these side effects.

After taking TENOFOVIR DISOPROXIL VIATRIS

Storage

Keep TENOFOVIR DISOPROXIL VIATRIS and all other medications out of reach of children.
Store TENOFOVIR DISOPROXIL VIATRIS at room temperature (below 25°C).
It should remain stable until the expiration date printed on the label.
Do not keep your medicine in places that are too hot or cold.
Do not leave TENOFOVIR DISOPROXIL VIATRIS in the car or on a window sill.
Heat and dampness can destroy some medicines.
Keep your TENOFOVIR DISOPROXIL VIATRIS tablets in the bottle with the cap tightly closed until you take them.
If you take TENOFOVIR DISOPROXIL VIATRIS tablets out of their pack they may not keep well.
Do not keep medicine that is out of date or that you no longer need.
If you throw any medicines away make sure that children will not find them.

General Advice

Talk to your doctor or pharmacist if you have any questions about this medicine or your condition.
Medicines are sometimes prescribed for purposes other than those listed in a Consumer Medicine Information.
If you have any concerns about this medicine, ask your doctor or pharmacist.
Your doctor or pharmacist can give you information about this medicine that was written for doctors or pharmacists (Product Information/Data Sheet).
Do not use this medicine for a condition for which it was not prescribed.
Do not share this medicine with other people.
Do not use if seal over bottle opening is broken or missing.

Product description

What TENOFOVIR DISOPROXIL VIATRIS tablets look like

TENOFOVIR DISOPROXIL VIATRIS 300 mg film coated tablets are light blue coloured, 12 mm, round, biconvex, film coated tablets debossed with 'TM300' on one side of the tablet and 'M' on other side.

Ingredients

Each TENOFOVIR DISOPROXIL VIATRIS tablet contains the following active ingredient
tenofovir disoproxil maleate
Each TENOFOVIR DISOPROXIL VIATRIS tablet contains the following inactive ingredients
microcrystalline cellulose
lactose monohydrate
hyprolose
colloidal anhydrous silica
magnesium stearate
OPADRY II complete film coating system 32K505018 BLUE (ARTG PI No: 109808)
TENOFOVIR DISOPROXIL VIATRIS also contains sugars as lactose.

Sponsor

Alphapharm Pty Ltd trading as Viatris
Level 1, 30 The Bond
30-34 Hickson Road
Millers Point NSW 2000
Phone: 1800 274 276
 
This leaflet was prepared in September 2022.
  
Australian registration numbers:
TENOFOVIR DISOPROXIL VIATRIS 300 mg film coated tablet bottle:
AUST R 261093
 
TENOFOVIR DISOPROXIL VIATRIS_cmi\Sep22/00