Beta-Blockers for Anxiety Treatment

Introduction to Beta-Blockers

The American College of Cardiology and other guideline societies recommend beta-blockers, particularly propranolol, for situational performance anxiety, but not as first-line treatment for chronic anxiety disorders like generalized anxiety disorder, panic disorder, or social anxiety disorder 1, 2

Propranolol is the preferred beta-blocker for acute performance anxiety, such as public speaking or test-taking anxiety, with a recommended dose of 20-40 mg taken 1 hour before the anxiety-provoking event 1
Propranolol works by blocking peripheral adrenaline effects, reducing rapid heart rate, tremors, and nervousness without sedation, and should be trialed before an important event to assess individual response and tolerability 1, 3

The Canadian Clinical Practice Guidelines and Japanese guidelines explicitly recommend against propranolol for chronic social anxiety disorder due to negative evidence, and instead recommend SSRIs and SNRIs as first-line pharmacotherapy 1, 2
If frequent or chronic performance anxiety requires treatment, CBT is recommended as first-line, and if pharmacotherapy is needed chronically, SSRIs/SNRIs are preferred over beta-blockers 1

Absolute contraindications for beta-blocker use include asthma, COPD, bradycardia, heart block, and decompensated heart failure, and patients with diabetes should be screened carefully due to the risk of masking hypoglycemia symptoms 1, 3, 5
Common side effects of beta-blockers include bradycardia, hypotension, fatigue, cold extremities, and sleep disturbances, and the medication should never be abruptly discontinued after regular use due to rebound symptoms 1, 3

Propranolol is the established agent for performance anxiety with up to 70% effectiveness for essential tremor, while metoprolol is less effective and considered second-line 1, 3

For isolated, infrequent performance anxiety, propranolol 20-40 mg can be prescribed 1 hour before the event, with a trial dose recommended before an important event, and CBT considered as an adjunct 1
For chronic or frequent anxiety, CBT alone or with SSRIs/SNRIs is recommended as first-line, with beta-blockers reserved only for specific situational events within a chronic anxiety disorder 1, 2, 5