If you have ever felt unable to sit still — not in a fidgety, anxious way, but in a way that feels almost mechanical, as though your legs need to move whether you want them to or not — you may have experienced akathisia. It is one of the most uncomfortable side effects of antipsychotic medication, and one of the most under-recognised. Propranolol, a beta-blocker first developed for heart problems in the 1960s, remains one of the better-supported treatments for it.
Propranolol is a non-selective beta-blocker that, at low doses, can reduce the inner restlessness and motor agitation of antipsychotic-induced akathisia for many patients.
What akathisia actually feels like
Akathisia is more than restlessness. People describe it as an unbearable inner pressure to move, a feeling of "crawling out of one's skin", or a sense that the body is being driven by a motor. It can present as constant pacing, foot tapping, leg crossing and uncrossing, or shifting in a chair — but the inner experience is often worse than what is visible from the outside. Severe akathisia is associated with treatment dropout, distress, and in some studies with increased suicidal thinking.
It is most commonly caused by dopamine D2-blocking antipsychotics, particularly first-generation drugs like haloperidol, but also second-generation drugs such as risperidone, paliperidone, lurasidone, and aripiprazole. For more on recognising it, see our guide to akathisia management and extrapyramidal symptoms.
Why propranolol helps
The exact mechanism by which propranolol relieves akathisia is not fully understood. The leading theory is that it acts on central beta-adrenergic receptors, modulating the noradrenergic systems that contribute to the subjective restlessness. Selective beta-1 blockers (like atenolol or metoprolol) generally do not work as well, which suggests the central, lipid-soluble action of propranolol matters.
Reviews from the Cochrane Collaboration have noted that the evidence base is older and modest in size, but propranolol consistently appears in clinical guidelines — including those from the NICE schizophrenia guideline (CG178) — as a reasonable first-line option for akathisia.
How it is typically used
Propranolol for akathisia is usually prescribed at much lower doses than for blood pressure or heart conditions. Many clinicians start at 10 mg two or three times a day and titrate upward depending on response and blood pressure. Doses above 80 mg per day rarely add benefit for akathisia and increase the risk of side effects.
Some patients notice relief within hours of the first dose. For others, the benefit accumulates over a week or two. If propranolol does not help within a few weeks at a tolerated dose, your prescriber may consider alternatives such as mirtazapine, benzodiazepines, anticholinergics, or — most importantly — adjusting the antipsychotic itself.
Who should be cautious
Asthma or significant COPD, severe bradycardia, certain types of heart block, decompensated heart failure, brittle diabetes, or a history of severe depression. Beta-blockers can also blunt the warning signs of low blood sugar.
Propranolol can lower blood pressure and heart rate. Most people tolerate the doses used for akathisia well, but checking baseline pulse and pressure is standard, and people with respiratory conditions need a careful conversation about risk and alternatives.
What to expect day to day
Many people notice that the urge to pace softens, that they can sit through a meal or a meeting again, and that sleep improves once the akathisia eases. Some report mild fatigue, cold hands and feet, or vivid dreams. These are usually manageable. Importantly, propranolol does not sedate you the way a benzodiazepine does — most people can drive and work normally on it.
Propranolol versus other options
Akathisia treatment has several plausible options, and the right choice depends on what the patient looks like clinically:
- Lower the antipsychotic dose — often the most effective intervention if symptoms allow.
- Switch antipsychotics — to a lower-akathisia agent such as quetiapine, olanzapine, or clozapine, when appropriate. See when to switch antipsychotics.
- Propranolol — when dose changes aren't possible and quick relief is wanted.
- Mirtazapine (low dose) — supported by recent meta-analyses; sometimes preferred when sleep or appetite are also problems.
- Benzodiazepines — short-term, especially in acute settings; see benzodiazepines in acute psychosis.
- Anticholinergics like benztropine — more useful for tremor and dystonia than for pure akathisia, but sometimes added.
Practical questions to ask
- Could lowering my antipsychotic dose reduce the akathisia first?
- What dose of propranolol are we starting at, and when will we know if it is working?
- How will my pulse and blood pressure be monitored?
- What other side effects of my antipsychotic might mimic or coexist with akathisia?
If propranolol does not work
Akathisia that does not respond to dose reduction or propranolol is often a sign that the antipsychotic itself is a poor fit. This is not a failure on the patient's part. A frank conversation with your prescriber about switching agents, sometimes guided by formal scales like the Barnes Akathisia Rating Scale, is usually the next step.
This article is for educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified mental health professional. If you or someone you know is in crisis, call or text 988 in the US, or your local emergency number.