Can you buy orlistat over the counter in the UK?
- The difference between OTC orlistat (60 mg) and prescription orlistat (120 mg)
- Who is eligible to buy Alli over the counter
- How to get orlistat on prescription, including online
- Which option is right for you
OTC orlistat (60mg / Alli): What you need to know
Alli is a 60 mg orlistat capsule available without a prescription from UK pharmacies. It was approved by the MHRA for pharmacy sale and is the only licensed OTC weight management medicine of its kind in the UK.
Who can buy Alli over the counter?
Alli is intended for adults aged 18 and over with a BMI of 28 or above. Before dispensing, a pharmacist will conduct a brief consultation to confirm suitability, covering your BMI, current medications, and relevant medical history. It is not suitable for everyone, and the pharmacist assessment is a clinical step, not a formality.
Warning!
Alli is not suitable for pregnant or breastfeeding women, people with chronic malabsorption syndrome or cholestasis, or those taking ciclosporin, anticoagulants such as warfarin, or certain other medications. The pharmacist consultation is a clinical step, not a formality, and exists to identify men and women for whom orlistat is not appropriate.
How does 60mg differ from prescription 120mg?
Both orlistat doses work through the same mechanism, inhibiting pancreatic lipase to block absorption of dietary fat. The 120 mg prescription dose blocks approximately 30% of dietary fat absorption; the 60 mg OTC dose blocks a smaller proportion. Clinical trials show that 120 mg produces greater weight loss than 60 mg over comparable time periods.
Both doses share a similar side effect profile, with gastrointestinal effects being the most commonly reported. For a full breakdown, see our guide on orlistat side effects, and how orlistat works.
Prescription orlistat (120mg): How to get it
Prescription orlistat 120 mg is available through three routes in the UK.
Via your GP on the NHS
Your GP can prescribe orlistat on the NHS for eligible patients. NICE guidance (TA22) recommends prescribing for adults with a BMI of 30 or above, or 27 or above with at least one weight-related comorbidity such as type 2 diabetes, high blood pressure, or high cholesterol. In England, the standard prescription charge of £9.90 applies. Prescriptions are free in Scotland, Wales, and Northern Ireland for eligible patients.
Via a private GP
Orlistat can also be prescribed privately following an in-person consultation, at a higher cost than the NHS route.
Via a regulated online clinic
Private online prescribing services staffed by UK-registered prescribers offer a convenient alternative to a face-to-face appointment. DoktorABC connects UK patients with licensed prescribers who can assess suitability for orlistat and issue private prescriptions where clinically appropriate.
Can I get orlistat on prescription? Eligibility explained
NICE eligibility criteria for orlistat on prescription are as follows:
- BMI of 30 kg/m² or above, or
- BMI of 27 kg/m² or above with at least one weight-related comorbidity
In addition, NICE recommends that orlistat is only prescribed alongside a calorie-controlled diet and increased physical activity, and that treatment should only continue beyond three months if at least 5% of starting body weight has been lost.
Good to know
If you do not meet NHS prescribing criteria but have a BMI above 27 and are motivated to lose weight, a private prescription may be a clinically appropriate option. A prescriber will assess your individual circumstances and advise accordingly.
Orlistat online prescription: How it works
Getting an orlistat prescription through a regulated online clinic is straightforward for most eligible patients.
- Complete a health questionnaire: Covering your BMI, medical history, current medications, and weight loss goals. This is a genuine clinical assessment reviewed by a UK-registered prescriber.
- Prescriber review: If you are assessed as suitable, a private prescription is issued electronically. Approval is not guaranteed.
- Dispensing and delivery: The prescription is sent to a GPhC-registered pharmacy, which dispenses and delivers the medication directly.
- Ongoing support: Legitimate services provide a route to follow-up clinical support and prescription renewal where appropriate.
Always confirm that any online service is registered with the Care Quality Commission (CQC) and uses a GPhC-registered pharmacy. Check GPhC registration at pharmacyregulation.org.
Which is right for you: OTC 60mg or prescription 120mg?
| Alli 60 mg (OTC) | Orlistat 120 mg (prescription) | |
|---|---|---|
| Requires prescription | No | Yes |
| Eligible BMI | 28 or above | 30 or above (or 27 with comorbidity) |
| Fat blocked | Less than 120 mg | Approx. 30% of dietary fat |
| Available on NHS | No | Yes, for eligible patients |
| Suitable for | Lower BMI; preference for no prescription | Higher BMI; greater efficacy needed |
If your BMI is between 28 and 30 and you do not have weight-related comorbidities, Alli 60 mg may be an appropriate starting point and is accessible without a GP appointment. If your BMI is 30 or above, or you have a weight-related health condition, prescription orlistat 120 mg is the more effective option and may be available to you on the NHS.
If you are unsure which route is most appropriate, DoktorABC connects UK patients with licensed prescribers who can assess your individual circumstances and advise on the most suitable treatment pathway.
Final thoughts
Both OTC and prescription orlistat are legitimate, MHRA-approved options for weight management in the UK. The right choice depends on your BMI, eligibility for NHS prescribing, and how significant a weight loss intervention you need. For most patients with a BMI of 30 or above, prescription orlistat 120 mg offers greater efficacy and may be available at low cost via the NHS. For those just above the OTC threshold, Alli provides accessible support without a prescription.
FAQ
Can you buy orlistat over the counter in the UK?
Yes. Orlistat 60 mg (Alli) is available without a prescription from UK pharmacies following a pharmacist consultation. Orlistat 120 mg is prescription-only.
What is the difference between Alli and prescription orlistat?
Both contain orlistat and work through the same mechanism. Alli is 60 mg and available OTC; prescription orlistat is 120 mg and produces greater fat blocking and weight loss. Prescription orlistat may be available on the NHS for eligible patients.
Can I get orlistat on the NHS?
Yes, for eligible patients with a BMI of 30 or above, or 27 or above with a weight-related comorbidity. Speak to your GP about whether you qualify.
How do I get orlistat online?
Via a regulated online clinic staffed by UK-registered prescribers. Complete a health questionnaire, have it reviewed by a prescriber, and if approved receive your prescription and medication from a GPhC-registered pharmacy.
What BMI do I need to buy Alli over the counter?
A BMI of 28 or above. The pharmacist will confirm your BMI and suitability before dispensing.
Is prescription orlistat more effective than Alli?
Yes. The 120 mg prescription dose blocks a greater proportion of dietary fat than the 60 mg OTC dose and produces greater average weight loss in clinical trials.
Where can I report a side effect from orlistat?
Via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk, through the Yellow Card app, or by asking your prescriber or pharmacist to report on your behalf.
The DoktorABC medical advisory board
Dr. Roland Ruiken
Medical advisor, Norway
Dr. Viktor Simunovic
Medical advisor, Croatia