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Fosamprenavir (Telzir) Uses, Dosage and Side Effects


What is Fosamprenavir (Telzir)?

Also known under the brand name Telzir, Fosamprenavir refers to a form of antiviral medication used in assisting individuals who have been diagnosed with the human immunodeficiency virus. The said drug is administered to provide enough medical therapy to thousands of individuals suffering from the hostile effects of the infection. Fosamprenavir is suitable for both adults and children.

With the rise of the availability of antiretroviral drugs, most especially Fosamprenavir, it becomes easier to manage the infection. Because of these types of medications, infected individuals can live longer and normally in spite of the presence of the virus within their bodies. Read on to learn more about the functions of this specific antiviral drug.

What is it used for?

After being diagnosed with the infection, a specific ARV drug will be prescribed by the healthcare professional. However, since there are a lot of ARV drugs available today, the healthcare professional will need to know what type of drug your body needs. Always remember that Fosamprenavir is specifically designed to provide treatment against the infection. Furthermore, it assists the immune system to work better.

How does Telzir work?

Treating infections involves the usage of different medical care options. For HIV, there are different classifications of drugs. One of them is Fosamprenavir, which is known to be part of the family of protease inhibitors. What do these inhibitors accomplish?

  • It inhibits viral spread within the body.
  • It blocks the viruses’ ability to multiply.
  • It deters the viruses’ capacity to replicate.
  • It prevents an increase in the viral population.

Alongside other effective antiretroviral drugs, Fosamprenavir is also highly efficient in doing its functions. However, when the prescription is already provided, patients must follow the instructions given by the healthcare professional. Doing so will help in their progress and attain an undetectable status.


Before obtaining the dosage, the healthcare professional will need to check on some factors to determine if the medicine is just right for infected individuals. Some of these factors include the patient’s medical history, weight, and age.

Adult Dosage:

  • One tablet of Fosamprenavir is to be consumed twice on a daily basis. It is consumed with ritonavir, a booster drug.

Children Dosage:

  • One tablet of Fosamprenavir is to be consumed twice on a daily basis. It is consumed with ritonavir, a booster drug.
  • The dosage will depend on the children’s weight.

Note: Since most children are not capable of consuming a whole tablet, an oral suspension form of Fosamprenavir is available for them to swallow.

How to take the drug?

Consuming Fosamprenavir is just like taking a normal drug for treating fever or colds. It is consumed by directly ingesting it orally. It is also necessary not to break or chew the tablet, as it can lessen its effectiveness. In the case of children, to ensure that the dosage is followed, choosing to use oral suspension is highly recommended.

In some cases, people tend to experience stomachaches after consuming Fosamprenavir. To avoid this, it is suggested to take this medicine with food. Moreover, to avoid skipping doses, make sure that you have set the alarm to get you notified of your dose schedule for the day.

Warnings and Precautions

In any form of treatment, a drug interaction is very likely to occur. This type of phenomenon happens when the patient has already been taking other forms of drugs prior to receiving an HIV diagnosis. To avoid this, tell your healthcare professional if you are following another prescription for an underlying infection.

One of the major precautionary measures when following a specific treatment is knowing if you are allergic to the prescribed medicine. Any known hypersensitivity can be fatal. Discuss this with your healthcare professional, and you will likely receive another prescription.

Fosamprenavir Side Effects

The adverse reactions involving Fosamprenavir can be categorized as mild and severe. Here you will know which of these side effects are manageable at home and which are not.

List of side effects that call for immediate medical help:

These are the types of adverse reactions where urgent medical attention is required. Consider the following:

  • Recurrent chills and fever
  • Sore throat
  • Severe diarrhea
  • Severe headache
  • Painful urination
  • Difficulty breathing
  • Pain in the genital area
  • Skin lesions
  • Severe vomiting
  • Unexplained tiredness and weakness

List of side effects that DO NOT call for immediate medical help:

These are the types of adverse reactions where urgent medical attention is NOT required. These side effects are manageable at home. Consider the following:

  • Mild headache
  • Mild stomach pain
  • Burning sensation
  • Tingling sensation
  • Nausea
  • Vomiting
  • Lower back pain

Aside from knowing the side effects of consuming Fosamprenavir, it is necessary that you take note of these and report them to your healthcare professional. In doing so, you are helping yourself to get better and know how your body progresses during your treatment.

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