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Vonaday: Uses, Dosage, and Side Effects


Vonaday: Uses, Dosage, and Side Effects

Since the introduction of antiretroviral therapy, treating HIV has become easier. Although the infection is still life-threatening, the usage of HIV medications can help infected people live longer, similar to undiagnosed individuals. In other words, these treatments give HIV-positive people another chance to live healthily. One of these medications is known as Vonaday.


What is Vonaday?

Vonaday is a prescription medicine used to treat one of the world’s most incurable and serious infections – HIV (human immunodeficiency virus). It is a combination of three major anti-HIV agents, such as lamivudine, efavirenz, and tenofovir disoproxil. This medicine works by boosting the body’s immune system, helping fight against the infection, and preventing the development of AIDS (acquired immunodeficiency syndrome).

Vonaday is a part of an HIV treatment program called antiretroviral therapy. It involves the use of combination drugs to make treatment easier for people. Compared to traditional HIV treatment, this approach only observes the consumption of one pill daily.


As mentioned, Vonaday is a combination of three active ingredients. They belong to different types of drug classifications:

Lamivudine – Nucleoside reverse transcriptase inhibitors (NRTIs)

Efavirenz – Non-nucleoside reverse transcriptase inhibitors (NNRTIs)

Tenofovir disoproxil – Nucleoside reverse transcriptase inhibitors (NRTIs)


NRTIs work by blocking a certain enzyme that HIV uses to replicate. On the other hand, NNRTIs function by binding on an enzyme, the same protein that the virus uses to make more copies of itself. This process reverses HIV’s capacity to grow its population within the body. The combination of these drugs help prevents viral growth and inhibits the development of the infection’s associated complications.


Precautions and Warnings

Like other prescription medicines, Vonaday has a list of precautions and warnings. It is essential to learn all about these measures to ensure successful treatment with this medication. Consider the following:


  • Avoid this medicine if you have known hypersensitivity or allergy to Vonaday or any of its active ingredients. Note that hypersensitivity can be fatal when not addressed immediately.
  • If you have been diagnosed with hepatitis B, the condition can get worse if you stop taking this medicine. During your treatment with Vonaday, you need to have frequent liver function tests.
  • To ensure that Vonaday is safe to consume, tell your healthcare professional if you have a history of liver and kidney disease, heart problems, alcohol and drug addiction, seizures, bone problems, and long QT syndrome.


Before being prescribed this medicine, your healthcare professional will ask if you are taking other medications. This is important as drug interaction can happen during your treatment with Vonaday. Note that drug interactions can be dangerous and may cause ineffective treatmeent for HIV.



Before starting your treatment with Vonaday, your healthcare professional must check on some significant factors. These are as follows:

  • Age and weight
  • Medical history
  • Underlying medical issues
  • Other forms of drugs you are currently taking


Once all of these are examined, you need to follow the dosage below:

Adult dosage:

  • Take one tablet of Vonaday orally once per day.


Pediatric dosage:

  • Take one tablet of Vonaday orally once per day.
  • The dosage will also depend on the children’s weight.


Note: One tablet of Vonaday contains 300mg lamivudine, 600mg efavirenz, and 300mg tenofovir disoproxil.


How to take Vonaday?

Following the prescription strictly plays a vital role in the treatment duration. It is essential to read the leaflet provided with the product before taking this medicine. If you have concerns about your treatment, contact your doctor for more information.

Take one tablet of Vonaday as prescribed and directed by your healthcare professional. It is recommended to take this medicine on an empty stomach before bedtime. Avoid skipping any doses as it can affect the treatment efficiency. To avoid missing doses, take Vonaday at the same time each day.


Side Effects

Common side effects:

  • Dizziness
  • Headache
  • Confusion
  • Insomnia
  • Pain
  • Nausea
  • Vomiting
  • Diarrhea
  • Stuffy nose
  • Cough
  • Rashes
  • Depression


Severe side effects:

  • Drowsiness
  • Irregular heartbeat
  • Bone pain
  • Chest tightness
  • Severe headache
  • Weakness
  • Tiredness
  • Dark urine
  • Pancreatitis
  • Paranoia
  • Upset stomach
  • Jaundice (yellowing of the skin and eyes)

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