Carvedilol's Effect on Blood Pressure and Heart Rate

Clinical Context and Safety Thresholds

The American Heart Association suggests that patients with systolic blood pressure as low as 85 mmHg may tolerate carvedilol, as demonstrated in the COPERNICUS trial with a mean baseline of 123/76 mmHg 1
The European Society of Cardiology recommends holding carvedilol if systolic blood pressure falls below 90 mmHg with symptoms, as stated in clinical guidelines 3
The American Association for the Study of Liver Diseases considers carvedilol at low doses (6.25-12.5mg) safe in cirrhosis patients with ascites, provided systolic pressure remains >90 mmHg 3

A systematic review by the Cochrane Collaboration found that carvedilol at recommended doses produces an average blood pressure reduction of -4/-3 mmHg, with no significant additional benefit from doses higher than the starting dose, although the specific guideline society is not mentioned in this context 1