FDA Approves Ensitrelvir to Prevent COVID-19 After Exposure - Scorecard - MDSpire

FDA Approves Ensitrelvir to Prevent COVID-19 After Exposure

Phase 3 data showed a 67% reduction in symptomatic infection among exposed household contacts who tested negative at baseline.

  • By

  • Kathryn Wighton

  • June 2, 2026

  • 3 min

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Clinical Scorecard: FDA Approves Ensitrelvir to Prevent COVID-19 After Exposure

At a Glance

CategoryDetail
Condition
Key MechanismsSARS-CoV-2 main protease inhibitor that suppresses viral replication
Target Population
Care Setting

Key Highlights

  • First and only oral option for COVID-19 postexposure prophylaxis
  • 67% reduction in symptomatic COVID-19 risk through day 10 compared to placebo

Guideline-Based Recommendations

Diagnosis

  • Participants must test negative for SARS-CoV-2 at enrollment

Management

  • Administer ensitrelvir as a 5-day regimen: three tablets on day 1, one tablet daily on days 2-5

Monitoring & Follow-up

  • Monitor for adverse events, particularly headache, diarrhea, and cough

Risks

  • No cases of dysgeusia attributed to ensitrelvir reported in the trial

Patient & Prescribing Data

Individuals aged 12 years and older exposed to symptomatic COVID-19

Effective in reducing symptomatic COVID-19 risk when administered postexposure

Clinical Best Practices

    Related Resources & Content

    Original Source(s)

    FDA Approves Ensitrelvir to Prevent COVID-19 After Exposure

    • by Kathryn Wighton

    • June 2, 2026

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