For situational performance anxiety, propranolol is typically prescribed at 10mg to 20mg of the immediate-release tablet, taken 60 to 90 minutes before the event and used only as needed. Peak blood levels occur 1 to 2 hours after the dose and the half-life is roughly 3 to 6 hours, giving about 3 to 4 hours of useful effect. Long-acting propranolol capsules are formulated for 24-hour blood pressure control and are the wrong formulation for situational use. The first dose should be taken at home on an ordinary day so the response is known before it matters.
TL;DR: For nerves before an event, the usual dose is 10mg to 20mg, taken about an hour to an hour and a half before, and only on the days you need it. It reaches its strongest point 1 to 2 hours in and gives you roughly 3 to 4 useful hours. Start at 10mg. More is not better here, it mostly buys side effects. Take your very first one at home on an ordinary day, because you want to know what it does to you before the audition instead of during it. Do not use the long-acting capsule, which is made for blood pressure and lasts all day. Take it with or without food, but keep that consistent between the practice dose and the day. And skip alcohol on any day you take it. Ask Dr. Ash.
These are three separate questions that people always ask in one breath, so this page answers them together.
What dose of propranolol is used for performance anxiety?
10mg to 20mg of the immediate-release tablet, as needed.
Start at 10mg. That is enough for most people to lose the tremor and the pounding heart, and it produces fewer of the effects that get in the way, chiefly lightheadedness. If 10mg is reliably not enough, 20mg is the usual next step, and that is a decision to make with the prescriber instead of on your own.
Going higher does not buy you much. Beta blockade of the receptors involved in tremor and heart rate is close to complete at these doses under the adrenergic drive of a performance, so more drug mostly adds the unwanted effects. The doses used for blood pressure and migraine prevention are much higher and are titrated over weeks for a different purpose.
Fishtown Medicine's protocol starts every patient at 10mg and treats any request above that as a physician conversation, since a person asking for more than the starting dose usually has a reason worth hearing.
How long before an event should you take it?
60 to 90 minutes.
Immediate-release propranolol is absorbed quickly and reaches peak plasma concentration 1 to 2 hours after the dose. Taking it 60 to 90 minutes ahead puts the peak roughly where the event is, with the effect already established as you walk in.
Two adjustments people find useful. If the start time is uncertain, as at a wedding, aim for the earliest plausible moment instead of the scheduled one, because a dose that has already peaked still works well an hour later. And if the event is long, understand that the cover is measured in hours and not in the whole day.
How long does propranolol last?
Roughly 3 to 4 hours of useful effect, from a half-life of about 3 to 6 hours.
Half-life is the time for blood concentration to fall by half, so a dose taken at 6pm is substantially reduced by 10pm and mostly gone overnight. That short window is what makes it suitable for a performance and unsuitable as a general anxiety treatment.
Individual variation is wide, because propranolol undergoes extensive first-pass metabolism in the liver and people differ in how quickly they clear it. Liver disease raises levels from the same dose. Some medications sharing the same liver enzymes raise them too. This is another argument for a practice dose at home, since your own response is the only number that matters.
Guidance from the Clinic
Why should the first dose be taken at home?
Because the response varies between people and the day of the event is the wrong time to learn yours.
The commonest unwanted effect is lightheadedness, particularly on standing, and it is dose-related. Some people notice tiredness or heavy legs. A few find 10mg does very little and a few find 20mg is more than they want. All of that is information you want a week early.
Evidence-Based Treatment
Dr. Ash reviews the research - and applies it to your specific biology.
Take it on an ordinary day when nothing depends on the answer. Sit, stand up, walk around, notice how you feel over the following two hours, and then you have your own data. If the response is uncomfortable, that is a conversation with the prescriber and not a reason to abandon the plan.
Immediate-release or long-acting?
Immediate-release, for this purpose, without exception.
Long-acting propranolol capsules are formulated to release drug over 24 hours for steady blood pressure or migraine control. That is the opposite of what situational use wants. You want a defined window of cover around an event and nothing for the rest of the day, since there is no benefit to being beta-blocked at breakfast the next morning and there is a cost in how you feel and how you train.
If a prescription arrives as a long-acting capsule for performance anxiety, ask about it. It usually reflects a formulary default and not a clinical decision.
Does food matter?
Somewhat, and consistency matters more than the direction.
Propranolol taken with food reaches somewhat higher blood levels than propranolol taken fasting, because food alters first-pass metabolism. The size of the difference is modest and rarely changes the clinical outcome.
What matters is that the practice dose and the dose on the day behave the same way. Test it at home under the conditions you expect on the day, and repeat those conditions. Taking your practice dose after lunch and your performance dose on an empty stomach introduces a variable you did not need.
How often can you take it?
As needed, for defined situations, and not on a schedule.
There is no fixed limit on how many times a year a person can use it situationally, and there is a pattern to watch for. Use that has drifted from occasional toward most days generally means the anxiety extends beyond the moments the prescription was written for, and that is a different diagnosis with a different treatment. It is the most useful thing a prescriber learns from a refill request.
Daily use also introduces the taper question, since sustained beta blockade upregulates receptors and abrupt stopping causes a rebound. That is covered on is propranolol addictive, along with why the rebound is not what people think it is.
Key Takeaways
- 10mg to 20mg of immediate-release propranolol, 60 to 90 minutes before the event, as needed.
- Start at 10mg. Higher doses buy side effects more than benefit for this purpose.
- Expect roughly 3 to 4 hours of useful effect from a half-life of 3 to 6 hours.
- Take the first dose at home on an ordinary day, under the same food conditions you expect on the day.
- Long-acting capsules are for blood pressure and are the wrong formulation here.
Related at Fishtown Medicine
- Propranolol for performance anxiety
- Who should not take propranolol
- Propranolol and alcohol
- Propranolol and exercise
- Is propranolol addictive?
Scientific References
- US Food and Drug Administration. Inderal (propranolol hydrochloride) prescribing information, clinical pharmacology. FDA Access Data.
- Routledge PA, Shand DG. Clinical pharmacokinetics of propranolol. Clinical Pharmacokinetics. 1979;4(2):73-90.
- Melander A, Danielson K, Scherstén B, Wåhlin E. Enhancement of the bioavailability of propranolol and metoprolol by food. Clinical Pharmacology and Therapeutics. 1977;22(1):108-112.
- Lennard MS, Silas JH, Freestone S, Ramsay LE, Tucker GT, Woods HF. Oxidation phenotype: a major determinant of metoprolol metabolism and response. New England Journal of Medicine. 1982;307(25):1558-1560.
- Brantigan CO, Brantigan TA, Joseph N. Effect of beta blockade and beta stimulation on stage fright. The American Journal of Medicine. 1982;72(1):88-94.
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