In a small intravenous infusion study of four healthy volunteers, VIP disappeared from plasma with an approximately one-minute half-time and an apparent metabolic clearance rate of about 9 mL/kg/min. Higher infusion exposure produced flushing and increased pulse rate. These findings do not determine kinetics or benefit of other routes or preparations.[1]
- The estimate is route-specific and based on four healthy participants.
- This batch did not review the separate literature on synthetic-VIP formulations (for example, aviptadil) studied by other routes in other conditions; a 2026-09-09 search found an active, contested literature on inhaled aviptadil in COVID-19 ARDS (including published methodological-dispute letters) that remains unreviewed here.
Inspection history
Clinical review: not reviewed by a qualified clinician.
· Independently inspected the listed passages; replaced or qualified inherited assertions. No qualified clinical review has occurred.
· Freshly reread the abstract via NCBI E-utilities; added the metabolic-clearance-rate figure and flagged the separate, unreviewed aviptadil/COVID-19 literature found in a broader search. No qualified clinical review.