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Zidovudine

Zidovudine

Zidovudine is an orally administered drug indicated for the treatment of HIV. It was the first approved anti-HIV drug that belongs to a class of drugs called nucleoside reverse transcriptase inhibitors. This drug works by stopping HIV from further infecting uninfected cells in the body; thus, it slows down the progress of HIV. Zidovudine, which may be combined with other anti-HIV drugs, is also prescribed during pregnancy as it prevents transmission of HIV from mother to baby. This medicine may also be used to treat other conditions as determined by your doctor.
Category: Hiv/Aids
Medically Reviewed by – Dr. Derek Lawson, MD
Last Updated on 8 July 2026

What is Zidovudine used for?

Zidovudine is an orally administered drug indicated for the treatment of HIV. It was the first approved anti-HIV drug that belongs to a class of drugs called nucleoside reverse transcriptase inhibitors. This drug works by stopping HIV from further infecting uninfected cells in the body; thus, it slows down the progress of HIV. Zidovudine, which may be combined with other anti-HIV drugs, is also prescribed during pregnancy as it prevents transmission of HIV from mother to baby. This medicine may also be used to treat other conditions as determined by your doctor.

What is the recommended dosage of Zidovudine?

The dosage of Zidovudine prescribed to each patient will vary. Always folow your physician’s instructions and/or the directions on the prescription drug label.

Zidovudine can be taken on an empty stomach.

What if you miss a dose of Zidovudine?

If your physician has instructed or directed you to take Zidovudine medication in a regular schedule and you have missed a dose of this medicine, take it as soon as you remember. However, if it is almost time for your next dose, instead skip the missed dose and go back to your regular dosing schedule. Do not double the doses unless otherwise directed.

It may be noted that missing doses may decrease the effectiveness of a drug. Hence, it is important not to miss doses of Zidovudine.

What if you overdose on Zidovudine?

Any medication taken in excess can have serious consequences. If you suspect an overdose, seek medical attention immediately. Some of the overdose symptoms of this drug include tiredness, vomiting, or severe persistent headache.

What are the side effects of Zidovudine?

Like other medicines, Zidovudine can cause some side effects. If they do occur, the side effects of Zidovudine are most likely to be minor and temporary. However, some may be serious and may require the individual to inform the doctor or visit the nearest hospital immediately.

It is pertinent to note that side effects of Zidovudine cannot be anticipated. If any side effects of Zidovudine develop or change in intensity, the doctor should be informed as soon as possible.

Zidovudine can cause side effects such as skin rash, dizziness, anemia, itching, headache, nervousness, nausea, stomach pain, ear pain, mouth sores, congestion, and confusion. This is not a complete list of all side effects. Do concur with your doctor and follow his directions completely when you are taking Zidovudine.

Zidovudine Mechanism of Action

Zidovudine works by slowing down the HIV virus inside the body. It blocks an enzyme that the virus needs to multiply. When this enzyme stops working, the virus cannot grow easily. This helps lower the amount of virus in the blood. The medicine supports the immune system so it can fight infections better. It does not cure HIV, but it helps manage it and improves long-term health when taken regularly.

FAQ’s

What Should Zidovudine Not Be Combined With?

Zidovudine should not be taken with certain drugs that may increase side effects or reduce how well it works. Medicines like ribavirin, stavudine, ganciclovir, interferon-alpha, and some bone marrow-suppressing drugs may cause harm when combined. Avoid combining it without a doctor’s advice. Mixing medicines without guidance may lead to low blood counts or liver issues. Always tell your doctor about other medicines, supplements, or herbal products you use.

Is Zidovudine Hazardous?

Zidovudine is safe when taken as directed, but like all medicines, it can have risks. High doses or misuse may harm the liver, muscles, or blood cells. Some people may feel tired, nauseous, or weak. Rarely, serious conditions like anemia or lactic acidosis can occur. It is important to get regular checkups. When used properly under medical care, it helps manage HIV effectively and supports a healthier life.

How Long Does a Baby Take Zidovudine After Birth?

Babies born to HIV-positive mothers may be given Zidovudine to lower the chance of infection. Most newborns take it for around 4 to 6 weeks, but the exact duration depends on the doctor’s plan and the baby’s health. The medicine helps protect the infant during the early weeks of life. Caregivers should follow dosage instructions carefully and never stop early without medical advice.

Is a prescription required for Zidovudine?

Yes. A prescription is required for Zidovudine. This medicine should not be used without medical advice because the correct dose, treatment duration, and safety checks depend on your health condition and other medicines you may be taking.

Is Zidovudine available over the counter?

No. Zidovudine is not available over the counter. It is a prescription-only medicine, so it should be used only after a licensed healthcare provider confirms it is suitable for your condition and explains the correct dosage, precautions, and possible interactions.

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