Can Beta Blockers Cause Hair Loss?
Beta blockers can trigger temporary hair shedding called telogen effluvium. Here is how it happens, which medicines are most likely to cause it, and what you can do.
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Key Takeaways
Beta blockers can cause temporary, diffuse hair shedding (telogen effluvium) by disrupting the normal hair growth cycle. Shedding usually starts two to four months after beginning treatment. In most cases, hair regrows within six to twelve months once the trigger is removed or the dose reduced.
Yes, beta blockers can cause hair loss. The shedding is usually a temporary, diffuse type called telogen effluvium (TE), where the medication pushes hair follicles into the resting phase earlier than normal. It typically appears two to four months after starting the medicine, not straight away, which can make the link easy to miss.
How beta blockers disrupt the hair cycle#
Hair normally passes through three phases: anagen (active growth), catagen (transition), and telogen (resting and shedding). In telogen effluvium, a trigger causes an unusually large proportion of follicles to enter telogen at the same time. About three months later, those hairs shed together.
Beta blockers are thought to cause this by interfering with beta-adrenergic receptors in hair follicles. Those receptors may play a role in regulating the growth cycle, though the exact mechanism is still being studied. The association between beta blockers and telogen effluvium is well documented in UK Summaries of Product Characteristics (SmPCs).
TE from beta blockers looks different from pattern baldness. The shedding is all over the scalp rather than concentrated at the crown or temples. There is no miniaturisation of follicles, and the underlying follicles remain healthy.
Which beta blockers carry the highest risk#
Hair loss frequency varies between individual medicines. The table below draws on UK SmPC data held on the Electronic Medicines Compendium (EMC).
| Beta blocker | Type | SmPC hair loss frequency |
|---|---|---|
| Propranolol | Non-selective | Not known (post-marketing reports) |
| Atenolol | Cardioselective | Uncommon (up to 1 in 1,000) |
| Bisoprolol | Cardioselective | Rare (1 in 1,000 to 1 in 10,000) |
| Metoprolol | Cardioselective | Rare (1 in 1,000 to 1 in 10,000) |
| Carvedilol | Non-selective + alpha-1 blocker* | Rare (1 in 1,000 to 1 in 10,000) |
| Nebivolol | Cardioselective | Rare (1 in 1,000 to 1 in 10,000) |
| Labetalol | Non-selective + alpha-1 blocker* | Not known (post-marketing reports) |
*Carvedilol and labetalol also block alpha-1 adrenergic receptors, which gives them a broader pharmacological profile than propranolol or the cardioselective agents.
Cardioselective beta blockers (bisoprolol, metoprolol, atenolol, nebivolol) act mainly on the heart's beta-1 receptors and have less effect on other tissues, including skin and follicles. Non-selective agents (propranolol, carvedilol, labetalol) block both beta-1 and beta-2 receptors throughout the body. This wider action may explain why non-selective beta blockers appear in more hair loss reports, though head-to-head data are limited.
Propranolol features most frequently in MHRA Yellow Card spontaneous reports, though this partly reflects how widely it is prescribed rather than a higher intrinsic risk per se.
How common is it, and does dose matter#
The honest answer is that precise incidence rates are hard to pin down. TE from any drug is likely under-reported because patients and clinicians do not always connect hair shedding to a medicine started months earlier.
There is some evidence that hair loss risk is dose-dependent. Patients on higher doses or long-term treatment appear more likely to be affected. This matters practically: dose reduction may reduce shedding without removing the cardiac or blood pressure benefit.
Switching medicines: what to ask your GP#
If you have noticed diffuse shedding two to four months after starting a beta blocker, raise it at your next appointment. You could say:
"I started [medicine name] about [X] months ago and have noticed a lot more hair coming out. Is hair loss listed as a side effect? Could we consider a lower dose or an alternative?"
Your GP may consider:
- A lower dose of the same beta blocker
- Switching to a more cardioselective agent if you are currently on a non-selective one
- Switching to a different drug class entirely
For hypertension, it is worth knowing that NICE NG136 does not recommend beta blockers as routine first-line treatment. ACE inhibitors, calcium channel blockers, and thiazide diuretics are preferred. If you are taking a beta blocker for high blood pressure rather than a heart condition, your GP may already have a stronger case for switching drug class.
For heart failure with reduced ejection fraction (HFrEF), NICE NG106 specifies bisoprolol, carvedilol, or nebivolol as first-line options within the class. Note that nebivolol has a specific UK licensed indication for stable mild-to-moderate heart failure in patients aged 70 or over, although it is also used in other indications such as hypertension without this age restriction. If you are on a beta blocker for heart failure, switching to another drug class is less straightforward, but a lower dose or a switch within the class may still be worth discussing.
Never stop a beta blocker abruptly without medical advice. Stopping suddenly can cause rebound effects including rapid heart rate and raised blood pressure.
Recovery: when does hair grow back#
If the beta blocker is stopped or the dose reduced, most people see shedding slow within two to three months. Visible regrowth typically begins within three to six months of the triggering dose being reduced or discontinued. Full density restoration can take longer, often six to twelve months, because each new hair has to grow from scratch through the full anagen phase.
If you cannot change your medicine, the shedding may improve anyway as your body adjusts, or it may continue at a lower level.
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Managing hair loss while continuing treatment#
If switching is not possible, there are practical options.
Topical minoxidil (available over the counter as a General Sale List medicine from pharmacies and other retailers, including Regaine) is sometimes used to support hair regrowth in telogen effluvium. The evidence specifically for TE is limited and not formally endorsed by NICE or British Association of Dermatologists guidelines for this indication, but minoxidil is well established for pattern hair loss and is generally safe to use alongside a beta blocker. Speak to your pharmacist before starting it.
For men with additional pattern baldness on top of drug-induced shedding, a clinician may also consider finasteride, a prescription-only medicine (POM) that reduces DHT levels. Finasteride is not suitable for women. Totiva's hair loss service offers access to both topical minoxidil and finasteride for men after a free consultation with a UK clinician.
Ironically, minoxidil was originally developed as an antihypertensive. It does have mild vasodilatory effects but is not used systemically at topical doses, and the combination with a beta blocker is generally not a concern at usual scalp application amounts.
Could something else be causing the shedding#
Not every hair loss in a person on a beta blocker is caused by the beta blocker. TE has many triggers. Worth ruling out:
- Iron deficiency: Low ferritin is one of the most common reversible causes of diffuse shedding in the UK, particularly in women
- Thyroid disease: Both underactive and overactive thyroid can cause TE, and thyroid conditions are common in people with heart disease
- Other medicines: Anticoagulants, ACE inhibitors, statins, and antidepressants all carry hair loss as a possible side effect
- Nutritional deficiency: Low vitamin D, B12, or zinc can contribute
- Post-illness shedding: COVID-19 and other significant infections are a recognised trigger
If shedding persists despite adjusting your beta blocker, ask your GP for blood tests including full blood count, ferritin, TSH, vitamin D, and B12.
You can also report hair loss as a suspected side effect via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk. This helps build the evidence base for drug-induced alopecia in the UK.
Medical Information: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any treatment.
