Nevimune

Nevimune (Nevirapine 200 mg) — Cipla NNRTI for HIV-1. Lead-in dose 200 mg/day × 14 days then 200 mg BID. Black-box severe hepatotoxicity and rash warning especially in higher CD4.

SKU: Nevimune Kategori: Kategorioversigt, Kroniske tilstande, HIV-medicin

✓ Medicinsk gennemgået af Morgan Ellis — Apoteksforsker · 8 års erfaring · Sidst gennemgået: maj 2026

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Nevimune — Nevirapine 200 mg (Cipla Inc). NNRTI for HIV. Lead-in dose 200 mg/day × 14 days then 200 mg BID. Black-box for severe hepatotoxicity and rash, especially in CD4 >250 women, >400 men.

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Low genetic barrier to resistance
First-generation NNRTIs (nevirapine, efavirenz) have a low genetic barrier — a single point mutation (K103N for efavirenz; Y181C for nevirapine) confers high-level resistance. Strict >95% adherence is mandatory. Resistance to one NNRTI confers cross-resistance across the class.

Nevirapine — severe hepatic + cutaneous reactions
Nevirapine carries an FDA black-box for severe hepatotoxicity (especially in CD4 >250 women, >400 men), severe rash, Stevens-Johnson syndrome, and DRESS. Lead-in dose (200 mg/day × 14 days, then 200 mg BID) reduces but does not eliminate risk. Stop immediately on rash + systemic features or LFT >5× ULN.

How NNRTIs work

Non-nucleoside reverse transcriptase inhibitors bind a hydrophobic pocket on HIV reverse transcriptase, distinct from the NRTI active site. They allosterically distort the enzyme. NNRTIs are non-competitive and do NOT need intracellular phosphorylation.

NNRTI-based regimens (typically with two NRTIs) were a mainstay of first-line ART globally for many years. Modern guidelines now favour integrase strand transfer inhibitors (INSTIs) as first-line, with NNRTIs as alternatives in cost-constrained settings or where INSTIs are unavailable.

Ofte stillede spørgsmål

Why has NNRTI use declined?

Modern guidelines prefer integrase strand transfer inhibitors (dolutegravir, raltegravir, bictegravir) as first-line ART because they have higher genetic barrier to resistance, better tolerability, and fewer drug interactions. NNRTIs remain widely used in resource-limited settings and where INSTIs are unavailable.

Side effects?

Class: rash (10-20%, often mild but can be severe), CNS effects (efavirenz), liver enzyme rises, GI upset. Specific: efavirenz vivid dreams, depression; nevirapine severe rash + hepatotoxicity; rilpivirine well-tolerated but PPIs contraindicated.

What about resistance?

NNRTIs have a low genetic barrier — a single mutation can confer class-wide resistance. Strict adherence is critical.

Drug interactions?

Most NNRTIs are CYP3A4 inducers (efavirenz, nevirapine) or substrates (rilpivirine). Many interactions: rifampicin requires dose adjustment, PPIs contraindicated with rilpivirine, methadone requires dose increase with efavirenz.

Pregnancy?

Efavirenz is generally safe in pregnancy (after years of caution about neural tube defects, pooled data show no increased risk). Nevirapine is safe but limited use in resource-rich settings due to severe rash/hepatotoxicity risk in CD4 >250 women. Rilpivirine has reasonable pregnancy data.

Adherence?

>95% required. Missed doses with NNRTIs rapidly select resistance because of low genetic barrier. Always discuss adherence challenges with your HIV team early — alternative regimens are available.

Hvad hvis jeg glemmer en dosis?

Take it when you remember if <6 hours late. If >6 hours late, skip and resume normal schedule — do not double up.

HBV co-infection?

NNRTIs do not treat HBV. The NRTI backbone (TDF + FTC or 3TC) treats both HIV and HBV — keep this combination if HBV co-infected. Stopping abruptly can flare HBV.

Lifelong therapy?

Yes. Stopping ART allows viral rebound within weeks. Consistent therapy gives near-normal life expectancy and U=U (Undetectable = Untransmittable).

When should I see my HIV team?

Routine HIV care: viral load + CD4 every 3-6 months once stable, annual STI screening, vaccination updates, lipid/glucose/renal screening. Earlier if symptoms suggest treatment failure or side-effect.

Nevimune (nevirapine) is the NNRTI in WHO second-line ART; the NRTI backbone it pairs with most often is Ricovir-EM (tenofovir DF 300 mg + emtricitabine 200 mg) — the same tenofovir/FTC fixed-dose combination used for HIV PrEP.

Other HIV & Antiviral Medications

Trioday — TDF + 3TC + EFV — single-tablet regimen by Cipla
Triomune — d4T + 3TC + NVP — older 3-in-1 (stavudine-based)
Zepdon — raltegravir 400 mg — integrase inhibitor
Abamune L — abacavir + lamivudine — alternative NRTI backbone
Tenvir L — tenofovir + lamivudine — alternative NRTI backbone

Medicinsk ansvarsfraskrivelse: HIV treatment is a complex, lifelong therapy. Drug choice depends on genotype, resistance testing, comorbidities, and prior treatment history. Discuss any regimen change with an HIV specialist. Adherence >95% is required to prevent resistance. Test for HBV before starting any tenofovir-, lamivudine-, or emtricitabine-containing regimen — withdrawal can cause severe HBV flare in co-infected patients.