Propranolol and Alcohol: Where the Warning Actually Sits

Propranolol and alcohol interact, and for once that word is used properly. UK product information puts alcohol in the interactions section rather than the general warnings, because alcohol changes how much propranolol ends up in your blood. Which direction depends on how you drink.

This page sets out what each UK source says and where they contradict, then covers two things most pages skip: what a beta blocker does to alcohol withdrawal signs, and what happens when propranolol was prescribed for the anxiety you drink for.

What the UK sources actually say

On many medicines alcohol appears only under special warnings, where regulators put additive rather than chemical risks. On propranolol it sits in section 4.5, the interactions section, next to cimetidine and rifampicin. Our reading is that the regulator treats this as a pharmacokinetic interaction, something happening to the drug itself, rather than two things that both lower blood pressure.

The tablet labels give you half the picture. Only the oral solution label explains the mechanism and tells you the effect reverses with chronic drinking. Our observation is that whether you get the long warning or the short one depends on the formulation prescribed, which is label authorship rather than clinical distinction.

The interaction runs in two directions

Alcohol taken at the same time appears to raise propranolol levels. In a 1980 study of five healthy adults, ethanol raised both the area under the plasma concentration curve and the maximum plasma concentration; the authors concluded acute alcohol “will alter the bioavailability of propranolol”.

Sustained drinking appears to do the opposite. In a 1981 study built around an evening drinking party, healthy subjects were given beta blockers twelve hours after the first drink. Propranolol’s plasma clearance increased, and plasma levels tracked blood alcohol content. Their conclusion: “Drinking habits must be considered in therapy with beta-blocking drugs or when seeking reasons for angina pectoris or arterial hypertension that does not respond to therapy.”

Now the inconvenient half. That same paper found “the blood pressure-reducing effect of propranolol diminished after alcohol”. The NHS says the opposite. Our reading is that they describe different moments, the NHS the evening and the study the morning after, but no source states that, so we will not assert it.

Their limitations deserve printing. One had five participants. Both are over forty years old. Neither was conducted in heavy drinkers.

Dizziness is the part you will actually notice

The NHS lists feeling tired, dizzy or weak among propranolol’s common side effects, and says to sit or lie down until it passes. On drinking, it says that during the first few days of treatment, or after a dose increase, it is best to stop until you see how it affects you, and otherwise “apart from being careful with alcohol, you can eat and drink normally while taking propranolol”.

The label is drier, saying propranolol “has no or negligible influence on the ability to drive and use machines”. The NHS is blunter: if propranolol makes you dizzy, do not drive, ride a bike or use tools or machinery, and it is an offence to drive if your ability to drive safely is affected.

Why this keyword has the volume it has

Propranolol is licensed in the UK for hypertension, angina, arrhythmia, migraine prophylaxis, essential tremor, thyrotoxicosis, portal hypertension and “relief of situational anxiety and generalised anxiety symptoms, particularly those of somatic type”. That last one is why this page gets searched.

It is also contested. A 2024 editorial in the British Journal of General Practice reports that UK propranolol prescriptions have risen since 2003, with a further rise between 2019 and 2023 most marked in young adults, and that “the most recent systematic review and meta-analysis on the topic concluded there was insufficient evidence to support the routine use of propranolol in the treatment of anxiety”. The trials behind it are small, underpowered, at high risk of bias and often over thirty years old. It states propranolol is not recommended by NICE for this condition.

To be straight about our sourcing: NICE’s website returned an access error on the day this page was researched, so every NICE position above is reported at second hand through that editorial.

The editorial sets out why the trend worries its authors. Propranolol “is known to cause severe toxicity when used in overdose”, in the label’s words, which describe bradycardia, hypotension, cardiogenic shock, seizures and coma.

If you are in crisis, call your local emergency number. In the UK that is 999, or NHS 111 for urgent advice, and the Samaritans are free on 116 123 at any hour. The NHS asks people to tell their doctor before starting propranolol if they have ever had depression or had thoughts about harming themselves.

If you drink for the same reason you were prescribed it

Some readers take propranolol for the physical side of anxiety, the racing heart and shaking hands, and drink for the same feeling. That is more common than the internet’s tone suggests.

The research is less tidy than it is usually quoted. The most cited prospective study, Crum and Pratt in 2001, found a relative risk of 2.41 for heavy drinking and 2.30 for alcohol abuse or dependence in social phobia. What is almost never quoted is which group carried it: the 84 participants with subclinical social phobia. Among the 33 with clinical social phobia, one developed heavy drinking and none developed abuse or dependence. The line that social anxiety roughly doubles alcohol risk rests on the milder group in a study whose severe group was too small to show anything.

A 2017 experiment is more useful. Stevens and colleagues gave alcohol, an alcohol-free placebo or orange juice to 62 people with social anxiety disorder and 60 without, then asked them to give a speech. Alcohol reduced self-reported anxiety only in those with the disorder. Observers rated everyone who had drunk as less competent. The authors suggest that gap may drive further drinking.

That is not a diagnosis of anyone reading it. But if the honest answer to “do you drink before things that make you anxious” is yes, it is worth telling your prescriber rather than a search engine, because it changes the prescription. Cognitive behavioural therapy for social anxiety and for anxiety more broadly treat what propranolol only blunts.

The bit almost nobody writes about: stopping drinking while on a beta blocker

Alcohol withdrawal is assessed largely by watching the body: pulse, blood pressure, sweating, tremor. Beta blockers interfere with those readings. The American Society of Addiction Medicine’s 2020 guideline says they “do not reduce sympathetic activity but rather mask signs and symptoms associated with sympathetic activation such as tachycardia and hypertension”, and “may mask the hyperadrenergic state and lead to a false perception that these signs are properly treated”.

The consequence: “Low withdrawal scores can typically be interpreted with confidence, although beta-adrenergic antagonists (beta-blockers) and other sympatholytic drugs may mask the signs and symptoms of withdrawal and lead to low scores.” Clinicians are told that if someone has stopped drinking but shows no withdrawal signs, they should consider whether a medicine is hiding them, and beta blockers are the named example.

The limits are clear. Beta blockers “can be used as an adjunct to benzodiazepines in select patients for control of persistent hypertension or tachycardia when these signs are not controlled by benzodiazepines alone”, they “should not be used to prevent or treat alcohol withdrawal seizures because they are ineffective for this purpose”, and “beta-adrenergic antagonists also can lower the seizure threshold”. They should not be used to treat alcohol withdrawal delirium either.

Two caveats. The ASAM guideline is American and speaks of beta blockers as a class, never naming propranolol. Our own extension, which no guideline states, is that propranolol is a particularly relevant example within that class, being separately licensed for essential tremor, and tremor is one of the signs a clinician looks for.

None of this is a reason to stop anything on your own. The label states that abrupt withdrawal of beta blockers is to be avoided and the dose reduced gradually. Stopping heavy daily drinking abruptly carries its own risks. Both belong with a clinician, and what alcohol withdrawal looks like and the medicines used to manage it are better preparation than a rule about wine.

The liver, and why drinking sometimes leads to the prescription

Some people are prescribed propranolol precisely because of alcohol.

One licensed indication is “prophylaxis of upper gastrointestinal bleeding in patients with portal hypertension and oesophageal varices”, a complication alcohol-related cirrhosis can produce. The same labels advise caution in decompensated cirrhosis, note the half-life may be increased in significant hepatic impairment, and say it occasionally causes hypoglycaemia in chronic liver disease.

The NHS is clear that alcohol-related liver disease “does not always cause symptoms in the early stages”, and that “if you stop drinking, your liver can often recover”. That window does not stay open indefinitely.

Where Orchid fits, if drinking is the part that has become difficult

Most people here want a straightforward answer about a glass of wine, and should take the NHS wording and get on with their evening. For a smaller group the problem is not the interaction but that the drinking has stopped being a choice, and stopping alone is not safe. If that is nearer the mark, the early signs of alcohol dependence is more useful reading.

The Orchid Recovery is a residential addiction and mental health treatment centre in Hang Dong District, Chiang Mai, Thailand, for international English-speaking adults. Our pages on medically supervised alcohol detox, alcohol addiction treatment and anxiety treatment set out what those involve, our clinical team is listed here, and you can speak to us if it would help. Treatment fees start at USD $10,900. Tell whoever you speak to what you are prescribed and how much you actually drink, because a beta blocker changes what a withdrawal assessment can see.

We have written separately about pregabalin and alcohol, where the mechanism is sedation rather than metabolism.

Sources

• NHS, Propranolol
• NHS, Common questions about propranolol
• NHS, Side effects of propranolol
• NHS, Who can and cannot take propranolol
• NHS, Taking propranolol with other medicines and herbal supplements
• NHS, Alcohol-related liver disease
• electronic Medicines Compendium, Propranolol 40mg Film-coated tablets, Summary of Product Characteristics
• electronic Medicines Compendium, Propranolol 40mg Film-coated tablets, Patient Information Leaflet
• electronic Medicines Compendium, Propranolol 40 mg film-coated tablets (Amarox), Summary of Product Characteristics
• electronic Medicines Compendium, Propranolol 40 mg Tablet (Ipca), Summary of Product Characteristics
• electronic Medicines Compendium, Propranolol Rosemont 40mg/5ml Oral Solution, Summary of Product Characteristics
• Phelan R, Cottrell A, Gee S and Rifkin L, Propranolol in anxiety: poor evidence for efficacy and toxicity in overdose, British Journal of General Practice 2024;74(748):516-519
• Grabowski BS, Cady WJ, Young WW and Emery JF, Effects of acute alcohol administration on propranolol absorption, International Journal of Clinical Pharmacology, Therapy and Toxicology 1980;18:317-319
• Sotaniemi EA, Anttila M, Rautio A, Stengard J, Saukko P and Jarvensivu P, Propranolol and sotalol metabolism after a drinking party, Clinical Pharmacology and Therapeutics 1981;29:705-710
• Crum RM and Pratt LA, Risk of heavy drinking and alcohol use disorders in social phobia: a prospective analysis, American Journal of Psychiatry 2001;158:1693-1700
• Stevens S, Cooper R, Bantin T, Hermann C and Gerlach AL, Feeling safe but appearing anxious: differential effects of alcohol on anxiety and social performance in individuals with social anxiety disorder, Behaviour Research and Therapy 2017;94:9-18
• The ASAM Clinical Practice Guideline on Alcohol Withdrawal Management, Journal of Addiction Medicine 2020
• Samaritans, Contact a Samaritan