Why Orlistat's Mechanism Makes It Effective
How Orlistat Blocks Fat Absorption
Orlistat works through a precise mechanism targeting lipase enzymes in your digestive system. These enzymes normally break down dietary fat so your body can absorb it. When you take orlistat 120mg capsules, the active ingredient inhibits approximately one third of these lipases, preventing that proportion of fat from being digested and absorbed. This unabsorbed fat passes naturally through your body rather than contributing to weight gain.
This mechanism explains why orlistat requires a prescription and clinical assessment - it's a proven pharmaceutical intervention, not a dietary supplement. Our generic orlistat 120mg costs £32.99 for 4 weeks (£29.69 with EDM10), whilst branded Xenical 120mg costs £42.99 for 4 weeks (£38.69 with EDM10). Both contain identical active ingredients working through the same fat-blocking mechanism.
Why "Approximately One Third" Matters
Understanding that orlistat blocks approximately one third of dietary fat - never 100% - helps set realistic expectations. The remaining two thirds of fat is still absorbed normally, which is why maintaining a reduced-calorie, lower-fat diet remains essential. This partial blocking action also explains why keeping meals low in fat (approximately 15g per meal) minimises gastrointestinal side effects whilst maximising the medication's effectiveness.
This precise mechanism differentiates orlistat from appetite suppressants that act on the brain. Instead, orlistat works locally in your gut without significant absorption into your bloodstream, making it suitable for adults with BMI 30+ or BMI 28+ with weight-related health conditions following clinical assessment.
Proven Mechanism Supports Long-Term Use
The lipase inhibition mechanism allows orlistat to be prescribed for extended periods when clinically appropriate. Our 12-week supply options reflect this - orlistat 120mg costs £95.99 (£86.39 with EDM10) whilst Xenical costs £128.99 (£116.09 with EDM10). Alli 60mg provides half-strength dosing at £129.99 for 12 weeks (£116.99 with EDM10).
Each 120mg capsule works for that specific meal's fat content, taken three times daily with main meals containing fat. This meal-by-meal action means you maintain control - skip meals without fat, skip that orlistat dose. The mechanism remains consistent whether you choose generic orlistat or branded Xenical, as both contain identical 120mg active ingredient.
Order Your Orlistat Today
Now you understand how orlistat's fat-blocking mechanism works, complete our online clinical assessment. UK-licensed prescribers review your suitability for this proven treatment, with next-day delivery from our GPhC-registered Leicester pharmacy. Use code EDM10 for 10% off every order - new and returning customers welcome.
