What oral minoxidil is
Minoxidil as a tablet is licensed in the UK for one thing only: severe, treatment-resistant high blood pressure, under the brand name Loniten, at doses typically starting around 5-10mg and going considerably higher. Using it for hair loss means using it off-label, at a much smaller dose, and only through a private prescriber, since it is not licensed by the MHRA for hair loss in the UK at any dose.
This matters because “off-label” does not automatically mean unsafe, but it does mean the dosing, monitoring and safety evidence comes from a smaller body of hair-loss research rather than a licensing programme for this use. Oral minoxidil is not routinely commissioned in NHS primary care for hair loss. Access is generally private or specialist-led, and local NHS policies can differ.
Who might be prescribed it, and typical doses
UK private prescribers offering oral minoxidil for hair loss typically use doses well below the blood-pressure range: commonly cited off-label doses are in the region of 1.25mg to 5mg daily for men and lower still for women, though this isn’t standardised by NICE or the BNF and varies by prescriber. It’s generally considered for people who haven’t responded well to, or can’t tolerate, topical minoxidil or finasteride, though a prescriber makes that judgement individually, not this page.
The safety data, honestly
The BNF adverse-effect listing for oral minoxidil is based on its licensed use for severe hypertension and should not be presented as a direct frequency estimate for the much lower doses used off-label for hair loss. The risks still matter, but the most useful frequency evidence comes from low-dose hair-loss studies.
In a retrospective multicentre study of 1,404 people receiving low-dose oral minoxidil for hair loss, the most frequent effect was increased body or facial hair growth (15.1%). Reported systemic effects included lightheadedness (1.7%), fluid retention (1.3%) and a fast heart rate (0.9%); 1.2% stopped treatment because of a systemic adverse effect. The study had no untreated control group, so it describes what was reported during treatment rather than proving every event was caused by minoxidil.
A separate 2024 monitoring study used a 7.5mg dose, which is above the commonly cited low-dose range. It found an increase in mean heart rate without a significant blood-pressure change and cautioned that doses above 5mg should be exceptional. Rare serious events, including pericardial effusion, have also been reported. The evidence is still developing, which is why a prescriber should assess cardiovascular history, blood pressure, other medicines and signs of fluid retention rather than treating the consultation as a formality.
None of this means oral minoxidil is inappropriate for everyone; it means a proper prescriber consultation, not just a questionnaire tick-box, should be screening for relevant heart and fluid-retention risk factors before it’s prescribed.
How UK clinics handle it
Because oral minoxidil for hair loss is off-label and prescription-only, every legitimate route to it in the UK runs through a private prescriber consultation, typically an online health questionnaire reviewed by a registered clinician. A prescriber will only prescribe it if it’s judged suitable for you, based on that review.
What UK clinics charge
The list below is a factual summary of consultation fees at clinics offering oral minoxidil prescribing, checked 16 July 2026. This is not a ranking or a recommendation; see our full hair loss clinic comparison for an alphabetical, filterable view with verification checks.
| Clinic | Consultation fee | Pricing model |
|---|---|---|
| e-Surgery | Free questionnaire | Pay-per-order (from £35.95 for 2.5mg) |
| Oxford Online Pharmacy | Free, 3-minute form | Pay-per-treatment (from £22.49) |
A prescriber will only prescribe if oral minoxidil is judged suitable for you. Prices shown are the lowest advertised figure at the time we checked and may vary by dose and pack size.
Alternatives
Topical minoxidil does not require a prescription and is available directly from any UK pharmacy; see our current minoxidil price comparison. See also finasteride vs minoxidil for how oral minoxidil compares with the other main prescription option.