Save up -80% on Efavirenz
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2018 Price of Efavirenz
Sustiva 50 mg capsule
* price without discount in nearest pharmacy. Price may vary.
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Efavirenz volume of distribution
Discount Cards 16,000+
Clients Benefit 29%
Total savings $4,735,080
What is Efavirenz
Efavirenz (brand names Sustiva and Stocrin) is a non-nucleoside reverse transcriptase inhibitor (NNRTI) and is used as part of highly active antiretroviral therapy (HAART) for the treatment of a human immunodeficiency virus (HIV) type 1. For HIV infection that has not previously been treated, efavirenz and lamivudine in combination with zidovudine or tenofovir is the preferred NNRTI-based regimen. Efavirenz is also used in combination with other antiretroviral agents as part of an expanded postexposure prophylaxis regimen to prevent HIV transmission for those exposed to materials associated with a high risk for HIV transmission.
Efavirenz mechanism of action
Similar to zidovudine, efavirenz inhibits the activity of viral RNA-directed DNA polymerase (i.e., reverse transcriptase). Antiviral activity of efavirenz is dependent on intracellular conversion to the active triphosphorylated form. The rate of efavirenz phosphorylation varies, depending on cell type. It is believed that inhibition of reverse transcriptase interferes with the generation of DNA copies of viral RNA, which, in turn, are necessary for synthesis of new virions. Intracellular enzymes subsequently eliminate the HIV particle that previously had been uncoated, and left unprotected, during entry into the host cell. Thus, reverse transcriptase inhibitors are virustatic and do not eliminate HIV from the body. Even though human DNA polymerase is less susceptible to the pharmacologic effects of triphosphorylated efavirenz, this action may nevertheless account for some of the drug’s toxicity.
Dosage forms of Efavirenz
|Tablet, film coated||oral|
|Capsule, hard||Oral use||100 mg|
A S Medication Solutions
Human Immunodeficiency Virus
Indication of Efavirenz
For use in combination treatment of HIV infection (AIDS)
Toxicity of Efavirenz
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