Esmolol hydrochloride

Increased propensity for AV block, severe bradycardia, and decreased left ventricular function.

Avoid concurrent administration. The concurrent administration of diltiazem with a beta blocker is contraindicated.

Source: G&G 14e · p617

Reduced efficacy of ritodrine and potential for adverse cardiovascular effects.

Ritodrine should not be used if the mother is receiving beta blockers.

Source: KDT 7e · p333

Marked rise in BP.

Adrenaline should not be given to patients receiving β blockers.

Source: KDT 7e · p133

Hyperkalaemia more likely.

Source: KDT 7e

Severe hypertension and cerebral hemorrhage.

The use of epinephrine generally is contraindicated in patients who are receiving nonselective β receptor antagonists.

Source: G&G 14e · p258

Exaggerated or prolonged bronchoconstriction and reduction in vital capacity in response to methacholine.

Emergency resuscitation equipment, oxygen, and medications to treat severe bronchospasm (e.g., β2 adrenergic receptor agonists for inhalation) should be available during testing.

Source: G&G 14e · p212

Severe bradycardia.

Extreme caution advised if amiodarone is co-administered with sofosbuvir and a beta blocker.

Source: Harrison 22e · unknown

Hyperkalaemia more likely.

Source: KDT 7e

Life-threatening bradyarrhythmias.

Particular caution is indicated.

Source: G&G 14e · p275

Reduced antihypertensive effect.

Monitor blood pressure and consider alternative antihypertensive agents or NSAIDs if necessary.

Source: G&G 14e · p275

Reduced antihypertensive effect.

Monitor blood pressure and consider alternative antihypertensive agents or NSAIDs if necessary.

Source: G&G 14e · p275

Increased antihypertensive effect.

This combination is often used to achieve better blood pressure control and manage reflex tachycardia from alpha-1 blockers.

Source: G&G 14e