VIRASTIVA

This brand name is authorized in South Africa

Active ingredients

The drug VIRASTIVA contains a combination of these active pharmaceutical ingredients (APIs):

1 Emtricitabine
UNII G70B4ETF4S - EMTRICITABINE

Emtricitabine is a synthetic nucleoside analogue of cytidine with activity that is specific to HIV-1, HIV-2 and HBV. Emtricitabine is phosphorylated by cellular enzymes to form emtricitabine 5'-triphosphate, which competitively inhibits HIV-1 reverse transcriptase, resulting in DNA chain termination. Emtricitabine is a weak inhibitor of mammalian DNA polymerase α, β and ε and mitochondrial DNA polymerase γ.

Read about Emtricitabine
2 Tenofovir disoproxil
UNII OTT9J7900I - TENOFOVIR DISOPROXIL FUMARATE

Tenofovir disoproxil is absorbed and converted to the active substance tenofovir, which is a nucleoside monophosphate analogue. Tenofovir is then converted to the active metabolite, tenofovir diphosphate, an obligate chain terminator, by constitutively expressed cellular enzymes. Tenofovir diphosphate inhibits HIV-1 reverse transcriptase and the HBV polymerase by direct binding competition with the natural deoxyribonucleotide substrate and, after incorporation into DNA, by DNA chain termination.

Read about Tenofovir disoproxil
3 Efavirenz
UNII JE6H2O27P8 - EFAVIRENZ

Efavirenz is a NNRTI of HIV-1. Efavirenz is a non-competitive inhibitor of HIV-1 reverse transcriptase (RT) and does not significantly inhibit HIV-2 RT or cellular DNA polymerases (α, β, γ or δ).

Read about Efavirenz

Medicine classification

This drug has been classified in the anatomical therapeutic chemical (ATC) classification system as follows:

ATC code Group title Classification
J05AR06 Emtricitabine, tenofovir disoproxil and efavirenz J Antiinfectives for systemic use → J05 Antivirals for systemic use → J05A Direct acting antivirals → J05AR Antivirals for treatment of HIV infections, combinations
Discover more medicines within J05AR06

Authorization and marketing

This drug has been assigned below unique identifiers within the countries it is being marketed:

Country Identification scheme Identifier(s)
Country: ZA Health Products Regulatory Authority Identifier(s): 49/20.2.8/0676

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