Beskrivelse
Paxlovid – Oral COVID-19 Antiviral Treatment (Rx)
Paxlovid is an oral antiviral medication used for the treatment of mild to moderate COVID-19 in patients who are at high risk of progressing to severe disease, hospitalization, or death.
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It is a combination therapy containing:
- Nirmatrelvir – a SARS-CoV-2 protease inhibitor that blocks viral replication
- Ritonavir – a pharmacokinetic booster that slows nirmatrelvir metabolism, increasing its effectiveness
Together, they reduce viral replication when taken early in infection, helping to limit disease progression.
Key Details
- Active Ingredients: Nirmatrelvir + Ritonavir
- Drug Class: Protease inhibitor antiviral combination
- Indication: Treatment of COVID-19 (high-risk patients)
- Mechanism of Action:
- Nirmatrelvir inhibits SARS-CoV-2 main protease (Mpro)
- Ritonavir boosts nirmatrelvir levels by inhibiting CYP3A metabolism
- Route of Administration: Oral tablets
- Prescription Status: Prescription-only medicine
Specifikationer
- Dosage Form: Co-packaged tablets
- Standard Strength per Dose:
- Nirmatrelvir 300 mg (2 × 150 mg tablets)
- Ritonavir 100 mg (1 tablet)
- Dosing Schedule: Twice daily for 5 days
- Administration: Taken together with or without food
- Onset of Action: Most effective when started early (within 5 days of symptom onset)
- Metabolism: CYP3A-mediated (ritonavir strongly inhibits CYP3A)
- Excretion: Renal and hepatic pathways
- Storage: Room temperature
Dosage & Administration
- Take 3 tablets together twice daily for 5 days
- Must begin as soon as possible after diagnosis and within the early phase of infection
- Complete full course even if symptoms improve
- Dose adjustment required in renal impairment
Compatibility / Suitable Use
- Adults with mild to moderate COVID-19 at high risk of severe disease
- Patients with conditions such as older age, diabetes, cardiovascular disease, obesity, or immunosuppression
- Outpatient treatment under medical supervision
- Not intended for prevention or post-exposure prophylaxis
Kontraindikationer
- Severe hypersensitivity to components
- Co-administration with certain drugs highly dependent on CYP3A (risk of serious interactions)
- Severe hepatic impairment in some cases (requires clinical evaluation)
Why Choose Paxlovid?
Paxlovid is one of the most effective oral COVID-19 treatments, designed to significantly reduce the risk of hospitalization when used early in high-risk patients. Its dual-action approach (protease inhibition + metabolic boosting) makes it a cornerstone of modern outpatient COVID care.