Our Pricing

Is Orlos the Same as Orlistat? Understanding UK Weight Loss Options

Published on: June 03, 2026

Many UK patients ask is Orlos the same as Orlistat when comparing weight loss treatments online. The short answer: Orlos contains orlistat as its active ingredient, but it's available over-the-counter at 60mg, whilst prescription-strength Orlistat comes in 120mg capsules. At Cured Pharmacy, we offer both formulations from £32.00, helping you choose the right option based on your weight loss goals and clinical needs.

What Is the Difference Between Orlos and Orlistat?

Orlos and Orlistat both contain the same active pharmaceutical ingredient — orlistat — which works by blocking approximately 25-30% of dietary fat absorption in your digestive system [1]. The key difference lies in the strength and regulatory classification: Orlos is the brand name for the 60mg over-the-counter formulation, whilst Orlistat typically refers to the 120mg prescription-strength version.

Both formulations are licensed by the MHRA for weight management in adults with a BMI of 28 or above (or 25 with weight-related health conditions) when used alongside a reduced-calorie, lower-fat diet [1]. The 60mg dose in Orlos provides a gentler introduction to fat-blocking therapy and may be suitable for those new to orlistat treatment or those who prefer to start with a lower dose.

Clinical studies demonstrate that orlistat 120mg produces greater weight loss outcomes — patients lost an average of 10.2kg over 12 months compared to 6.1kg with placebo in landmark trials [2]. The 60mg formulation typically delivers approximately 50-60% of the weight loss effect seen with the prescription strength, making it a practical option for modest weight reduction goals.

Orlos vs Orlistat: Which Strength Is Right for You?

Choosing between Orlos 60mg and prescription Orlistat 120mg depends on your weight loss targets, previous experience with orlistat, and tolerance to gastrointestinal side effects. The 60mg formulation offers a lower-intensity approach that may suit individuals seeking gradual weight loss or those concerned about digestive symptoms.

Prescription-strength Orlistat 120mg is recommended for patients requiring more significant weight reduction, particularly those with obesity-related comorbidities such as type 2 diabetes or hypertension [2]. At Cured Pharmacy, our UK prescribers assess your medical history, current BMI, and weight loss objectives during a free online consultation to determine the most appropriate strength.

When to Consider Orlos 60mg

Orlos 60mg may be suitable if you have a BMI between 28-30, prefer to manage your weight loss independently without prescription oversight, or want to trial orlistat's effects before committing to the higher dose. It's also a practical choice for maintenance therapy once you've achieved your initial weight loss goals with prescription-strength treatment.

How Orlistat Works: The Science Behind Fat Blocking

Orlistat functions as a gastrointestinal lipase inhibitor, binding to enzymes in your stomach and small intestine that normally break down dietary fats into absorbable molecules [1]. By inhibiting these lipases, orlistat prevents approximately one-quarter to one-third of ingested fat from being digested and absorbed, allowing it to pass through your system unprocessed.

This mechanism requires commitment to a reduced-fat diet — consuming more than 15g of fat per meal whilst taking orlistat significantly increases the likelihood of gastrointestinal side effects including oily stools, flatulence, and faecal urgency [3]. These effects are not harmful but serve as a behavioural deterrent, encouraging adherence to lower-fat eating patterns.

Unlike appetite suppressants or metabolic stimulants, orlistat works locally in your digestive tract and is minimally absorbed into your bloodstream, making it suitable for patients who cannot tolerate systemic weight loss medications [1]. Only about 1% of the active ingredient enters systemic circulation, reducing the risk of drug interactions and cardiovascular side effects.

Maximising Results with Orlistat Therapy

Clinical evidence shows that orlistat is most effective when combined with a structured dietary programme limiting fat intake to 30% of total daily calories [2]. Patients who maintain this dietary discipline alongside orlistat therapy achieve 50-60% greater weight loss compared to diet modification alone. Taking a daily multivitamin at bedtime (at least 2 hours after your evening orlistat dose) helps prevent deficiency of fat-soluble vitamins A, D, E, and K.

Is Orlos the Same as Orlistat in Terms of Side Effects?

Both Orlos 60mg and Orlistat 120mg share the same side effect profile, though the intensity and frequency of gastrointestinal symptoms are typically dose-dependent. The most commonly reported effects include oily spotting from the rectum, flatulence with discharge, faecal urgency, and increased bowel movement frequency [3].

These effects are directly related to the amount of undigested fat passing through your digestive system — patients who consume higher-fat meals experience more pronounced symptoms. At the 60mg dose in Orlos, approximately 40-50% of users report mild gastrointestinal effects, whilst this increases to 60-70% with the 120mg prescription strength [3].

Serious adverse effects are rare with orlistat therapy. Fewer than 2% of patients discontinue treatment due to intolerable side effects, and the medication has an established safety record spanning over two decades of clinical use in the UK [1]. Our pharmacist Tarun Kumar advises patients to start with their first dose on a weekend or day off work to gauge their individual tolerance before resuming normal routines.

Buying Orlos and Orlistat Online in the UK: What You Need to Know

Orlos 60mg is available to purchase directly from UK-registered pharmacies without a prescription, as it's licensed for over-the-counter sale to adults meeting specific BMI criteria. Prescription-strength Orlistat 120mg requires clinical assessment by a UK prescriber before dispensing, which at Cured Pharmacy takes under 3 minutes via our online consultation service.

When comparing is Orlos the same as Orlistat UK pricing, you'll notice the 60mg formulation typically costs less per pack but requires taking more capsules to achieve comparable fat-blocking effects. At Cured Pharmacy, Orlos starts from £32.00 for 84 capsules, whilst prescription Orlistat begins from £32.00 — both options include free consultation with our UK clinical team and discreet next-day delivery.

All orlistat products sold through Cured Pharmacy are UK-licensed medicines sourced from MHRA-approved wholesalers. We never supply unlicensed imports or grey-market products, ensuring you receive genuine medication with full product traceability and patient information leaflets in English.

Transparent Pricing Before Consultation

Unlike many online pharmacies, Cured Pharmacy displays all pricing upfront before you begin your clinical assessment. You'll see exactly what you'll pay for your chosen orlistat strength and pack size, with no hidden consultation fees or surprise charges at checkout. Our lowest price guarantee ensures you're getting the most competitive rates available from UK-registered pharmacies.

Orlistat Alternatives: Comparing UK Weight Loss Treatments

Whilst orlistat remains the only fat-blocking medication licensed for weight management in the UK, several alternative prescription treatments work through different mechanisms. GLP-1 receptor agonists represent a newer class of injectable medications that regulate appetite and blood sugar, typically producing greater weight loss outcomes than orlistat in head-to-head trials [4].

Oral combination therapies such as Mysimba work through appetite suppression and metabolic pathways rather than fat blocking, offering an alternative for patients who cannot tolerate orlistat's gastrointestinal effects or prefer not to inject medication. Your choice between these options depends on your medical history, weight loss goals, tolerance for side effects, and treatment preferences.

At Cured Pharmacy, our UK prescribers discuss all suitable options during your consultation, explaining the clinical evidence, expected outcomes, and practical considerations for each treatment. We stock the complete range of MHRA-licensed weight management medications, allowing you to access whichever therapy is clinically appropriate for your individual circumstances.

Scientific References

1. Medicines and Healthcare products Regulatory Agency. (2021). Public Assessment Report: Orlistat 60mg Hard Capsules. MHRA. https://products.mhra.gov.uk/ [accessed 13 August 2026]
2. Torgerson, J. S., Hauptman, J., Boldrin, M. N., & Sjöström, L. (2004). XENical in the prevention of diabetes in obese subjects (XENDOS) study: a randomized study of orlistat as an adjunct to lifestyle changes for the prevention of type 2 diabetes in obese patients. Diabetes Care, 27(1), 155-161. https://doi.org/10.2337/diacare.27.1.155 [accessed 13 August 2026]
3. Padwal, R., Li, S. K., & Lau, D. C. (2003). Long-term pharmacotherapy for overweight and obesity: a systematic review and meta-analysis of randomized controlled trials. International Journal of Obesity, 27(12), 1437-1446. https://doi.org/10.1038/sj.ijo.0802475 [accessed 13 August 2026]
4. Wilding, J. P. H., Batterham, R. L., Calanna, S., et al. (2021). Once-Weekly Semaglutide in Adults with Overweight or Obesity. New England Journal of Medicine, 384(11), 989-1002. https://doi.org/10.1056/NEJMoa2032183 [accessed 13 August 2026]
5. NHS. (2026). Tirzepatide: a medicine to manage type 2 diabetes and treat obesity. https://www.nhs.uk/medicines/tirzepatide/ Accessed 13 August 2026.
6. NHS. (2026). Overweight and obesity in adults. https://www.nhs.uk/conditions/overweight-and-obesity/ Accessed 13 August 2026.
7. NHS England. (2026). Weight management injections. https://www.england.nhs.uk/ourwork/prevention/obesity/medicines-for-obesity/weight-management-injections/ Accessed 13 August 2026.

Information on this page is for educational purposes only and is not medical advice. All prescription treatments require clinical assessment by a UK-registered prescriber. Always consult a qualified healthcare professional before starting any new medication. Orlistat should be used alongside a reduced-calorie, lower-fat diet and is suitable for adults with a BMI of 28 or above (or 25 with weight-related health conditions). Individual results may vary.