Lamivudine/zidovudine

Lamivudine/zidovudine

Chemical structure of Lamivudine and Zidovudine

Lamivudine/zidovudine, also known by the brand name Combivir, is a fixed-dose combination antiretroviral medication used in the treatment of HIV/AIDS. It combines two active ingredients, lamivudine and zidovudine, both of which are nucleoside reverse transcriptase inhibitors (NRTIs). This combination is used to inhibit the replication of the human immunodeficiency virus (HIV) by targeting the reverse transcriptase enzyme, which is crucial for viral replication.

Medical Uses

Lamivudine/zidovudine is primarily indicated for the treatment of HIV-1 infection in adults and children. It is often used as part of a combination antiretroviral therapy (cART) regimen. The combination of lamivudine and zidovudine helps to reduce the viral load in the body, increase CD4 cell counts, and delay the progression of HIV to AIDS.

Mechanism of Action

Both lamivudine and zidovudine are nucleoside analogues that inhibit the activity of reverse transcriptase, an enzyme necessary for the conversion of viral RNA into DNA. By incorporating themselves into the viral DNA chain, they cause premature chain termination, thereby preventing the virus from replicating.

Side Effects

Common side effects of lamivudine/zidovudine include headache, nausea, fatigue, and malaise. More serious side effects can include anemia, neutropenia, and lactic acidosis. Patients are monitored for these adverse effects, and dosage adjustments may be necessary.

Drug Interactions

Lamivudine/zidovudine can interact with other medications, which may affect how the drugs work or increase the risk of serious side effects. It is important to inform healthcare providers of all medications being taken, including over-the-counter drugs and supplements.

Dosage and Administration

The typical dosage of lamivudine/zidovudine for adults is one tablet taken twice daily, with or without food. The dosage for children is based on body weight and should be determined by a healthcare provider.

Related Pages

• HIV/AIDS
• Antiretroviral drug
• Nucleoside reverse transcriptase inhibitor
• Lamivudine
• Zidovudine