Why Orlistat's Mechanism Makes It Effective
How Orlistat Blocks Fat Absorption
Orlistat works by inhibiting lipase enzymes in your digestive system. These enzymes normally break down dietary fat so it can be absorbed into your bloodstream. When orlistat blocks approximately one third of these enzymes, the corresponding fat cannot be digested or absorbed. This unabsorbed fat passes naturally through your body, reducing the calories you absorb from meals. The mechanism is purely local—orlistat acts in your gut rather than affecting brain chemistry or appetite centres.
Why "Approximately One Third" Matters
Clinical studies show orlistat blocks approximately one third of dietary fat absorption—never 100%. This partial blocking is actually beneficial because it allows essential fat-soluble vitamins (A, D, E, K) to still be absorbed whilst significantly reducing caloric intake from fat. At EverydayMeds, generic orlistat 120mg costs £32.99 for 4 weeks (£29.69 with EDM10), whilst branded Xenical costs £42.99 (£38.69 with EDM10)—both containing identical 120mg doses with the same mechanism.
Prescription Requirements for 120mg Orlistat
The 120mg dose requires prescription-only medicine (POM) status because it delivers clinically significant fat-blocking effects. UK-licensed prescribers assess your BMI, medical history, and weight-related health factors before prescribing. Generally suitable for adults with BMI ≥30kg/m² or BMI ≥28kg/m² with conditions like type 2 diabetes or high blood pressure. Our online clinical assessment streamlines this process—complete your medical questionnaire and receive prescriber review within 24 hours.
Generic Orlistat vs Xenical: Same Mechanism
Both generic orlistat 120mg and Xenical 120mg contain identical active ingredients working through the same lipase inhibition mechanism. The clinical effect is equivalent—the difference is cost. Generic orlistat at £63.99 for 8 weeks (£57.59 with EDM10) offers substantial savings compared to Xenical at £86.99 (£78.29 with EDM10). Both require the same prescription process and deliver the same approximately one-third fat absorption blocking.
Supporting Your Diet with Orlistat's Action
Orlistat works best when meals contain no more than 15g fat each. Higher fat intake increases gastrointestinal side effects as more unabsorbed fat passes through your system. The mechanism actually encourages healthier eating patterns—patients naturally reduce dietary fat to minimise side effects. Combined with reduced calories and increased physical activity, orlistat's fat-blocking action supports sustainable weight management approaches.
Next Day Delivery Across the UK
Following successful clinical assessment, your prescribed orlistat is dispensed by our GPhC-registered pharmacy in Leicester and delivered discreetly nationwide. Choose 2-week supplies (42 capsules) to trial the mechanism, or 12-week supplies (252 capsules) at £95.99 (£86.39 with EDM10) for established users. All pack sizes include prescription costs—no separate GP fees required.
