Why Understanding the Mechanism Matters for Your Purchase
How Orlistat Blocks Fat Absorption: The Clinical Mechanism
Orlistat works by inhibiting pancreatic and gastric lipases - enzymes responsible for breaking down dietary fat in your digestive system. When these enzymes are blocked, approximately one third of the fat you consume cannot be digested or absorbed into your body. This unabsorbed fat passes naturally through your digestive system and is eliminated, reducing your caloric intake from dietary fat.
This mechanism is identical whether you choose generic orlistat 120mg (from £15.20 with EDM10), branded Xenical 120mg (from £19.35 with EDM10), or lower-strength Alli 60mg (from £26.09 with EDM10). The difference lies in dosage strength and cost, not the underlying fat-blocking action.
Why "Approximately One Third" Matters
Understanding that orlistat blocks approximately one third of dietary fat - not all fat - helps set realistic expectations. Your body still absorbs the remaining two thirds of fat normally, which provides essential fatty acids while reducing overall calorie absorption. This selective blocking mechanism explains why orlistat works best alongside a reduced-calorie, lower-fat diet rather than as a standalone solution.
The 120mg prescription strength (available as generic orlistat or Xenical) provides maximum fat-blocking potential, while Alli's 60mg dose offers a gentler introduction to treatment. Both work through the same lipase inhibition mechanism.
Local Action in Your Digestive System
Unlike appetite suppressants that affect brain chemistry, orlistat acts locally within your gut. Minimal amounts enter your bloodstream, making it a mechanically-based rather than systemically-absorbed treatment. This local action explains the gastrointestinal side effects - they're direct evidence the fat-blocking mechanism is working.
When you eat a meal containing fat, orlistat immediately begins inhibiting lipase enzymes. The timing of action means taking each 120mg capsule with main meals containing fat maximises the mechanism's effectiveness. Our 84-capsule packs (£29.69 generic orlistat, £38.69 Xenical with EDM10) provide 4 weeks of this targeted fat-blocking action.
Clinical Evidence Behind the Mechanism
The lipase inhibition mechanism has been extensively studied and proven effective in clinical trials. This isn't theoretical - orlistat's fat-blocking action is measurable and consistent. When combined with a reduced-calorie diet providing no more than 30% calories from fat, this mechanism can support significant weight management outcomes.
Whether you start with our 42-capsule trial pack (£15.20 generic orlistat with EDM10) or commit to a 168-capsule 8-week supply (£57.59 with EDM10), you're accessing the same proven mechanism that has helped patients achieve weight loss goals across decades of clinical use.
Ready to Start? Choose Your Orlistat Option
Now you understand how orlistat's fat-blocking mechanism works, you can make an informed choice between our three options. Generic orlistat 120mg offers maximum potency at the lowest cost. Xenical 120mg provides the same mechanism with branded assurance. Alli 60mg delivers gentler fat-blocking for those preferring lower-dose treatment.
Complete our online clinical assessment today. Our UK-licensed prescribers will review your suitability and, if appropriate, issue a prescription for next-day delivery. Use code EDM10 for 10% off every order - start your fat-blocking treatment tomorrow.
