🤧 Paxlovid Mechanism & Rebound Phenomenon Simulator

Nirmatrelvir Blocks the Main Viral Protease

A short placeholder sentence on protease inhibition mechanism.

• 3CLpro: Target enzyme (Placeholder short note)
• Covalent: Inhibitor type (Placeholder short note)
• Active site: Binding site (Placeholder short note)
• Ritonavir: Booster drug (Placeholder short note)

How nirmatrelvir stops the protease

Placeholder sentence describing active-site binding and polyprotein cleavage blockade.

Fixed Five-Day Dosing Schedule

A short placeholder sentence on the standard dosing regimen.

• 5 days: Course length (Placeholder short note)
• 2x daily: Dosing (Placeholder short note)
• ≤5 days: Start window (Placeholder short note)
• CYP3A4 boost: Ritonavir role (Placeholder short note)

Why ritonavir boosting matters

Placeholder sentence describing CYP3A4 inhibition extending nirmatrelvir exposure.

Rapid Drop in Viral Load During Therapy

A short placeholder sentence on suppression kinetics.

• ~3 logs: Load drop (Placeholder short note)
• Day 1-3: Onset (Placeholder short note)
• Faster drop: Adherence effect (Placeholder short note)
• ~1-2 days: Symptom lag (Placeholder short note)

Replication halted, load falls

Placeholder sentence describing rapid decline in detectable viral RNA.

Viral and Symptom Rebound After Stopping

A short placeholder sentence on the rebound mechanism.

• Day 7-9: Rebound window (Placeholder short note)
• ~10-20%: Reported rate (Placeholder short note)
• Incomplete clearance: Cause theory (Placeholder short note)
• Not routine: Retreatment (Placeholder short note)

Why rebound happens

Placeholder sentence describing residual virus reemerging after drug clearance.

Placeholder short callout about rebound not requiring a second antiviral course.

Final Clearance and Symptom Resolution

A short placeholder sentence on eventual full recovery.

• Day 10+: Resolution (Placeholder short note)
• Adaptive clearance: Immune role (Placeholder short note)
• Until negative: Isolation (Placeholder short note)
• Full recovery: Outcome (Placeholder short note)

Immune system finishes the job

Placeholder sentence describing adaptive immunity clearing residual virus.