ACEi/ARBs in COVID-19: Beneficial, Bad, or Benign? Preclinical studies suggest ACEi/ARB use increases ACE2 expression, raising concern for increased likelihood of viral entry. However, ACEi/ARB use may be protective against RAAS overactivation in COVID-19. David Rink, MS4 @de_Rink and Kerryn Roome, MS4 @KerrynRoome #ACEi #ARBs #COVID19 #SARSCOV2 #Coronavirus #Pathophysiology