Carvedilol must not be used in patients with: Hypersensitivity to carvedilol or any component of the product; Unstable/decompensated heart failure; Clinically manifest liver dysfunction.
As with other β-blockers, carvedilol must not be used in patients with: 2nd and 3rd degree AV block (unless a permanent pacemaker is in place); severe bradycardia (< 50 bpm); sick sinus syndrome (including sino-atrial block); severe hypotension (systolic blood pressure < 85 mmHg); cardiogenic shock; history of bronchospasm or asthma.