c19early.org
Ensifentrine for COVID-19
1 study with 45 patients
Serious outcome risk
Ensifentrine
Control
No significant improvements are seen in meta-analysis to date.
COVID-19 Ensifentrine studies · October 2026
Outcome (studies)
Improvement
Relative risk · 95% CI
All studies (1)−150%
Mortality (1)−150%
RCTs (1)−150%
Late (1)−150%
00.511.5+
← Ensifentrine
reduces risk
Increased
risk →
Ensifentrine is a small-molecule dual PDE3/4 inhibitor with bronchodilator and anti-inflammatory effects.
May 1
2021
MacDonald-Berko et al., NCT04527471 A Single-center, Pilot, Randomized, Double-blind, Placebo-controlled Study to Evaluate the Efficacy and Safety of Ensifentrine in the Recovery of Hospitalized Patients With COVID-19
150% higher mortality (p=1) and 150% worse recovery (p=1). RCT 45 hospitalized COVID-19 patients showing no significant difference with ensifentrine treatment.