Why Understanding Orlistat's Mechanism Matters
The Science Behind Orlistat's Fat-Blocking Action
Orlistat works through a precise, scientifically-proven mechanism that targets fat absorption in your digestive system. The medication inhibits lipase enzymes in your gut - these are the enzymes responsible for breaking down dietary fat so it can be absorbed. When lipase enzymes are blocked, approximately one third of the fat you eat cannot be digested or absorbed into your body. This unabsorbed fat passes naturally through your digestive system and is eliminated.
Why "Approximately One Third" Makes the Difference
The fact that orlistat blocks approximately one third of dietary fat absorption is crucial to understand. This isn't a complete fat blocker - it's a targeted, measured reduction that can make a significant impact on your calorie intake when combined with a reduced-calorie, lower-fat diet. For someone eating 60g of fat daily, orlistat may prevent around 20g from being absorbed - that's approximately 180 fewer calories absorbed each day.
Local Action, Systemic Benefits
Unlike some weight loss treatments that work on your brain or metabolism, orlistat acts locally in your gut. Very little orlistat is absorbed into your bloodstream, which means its fat-blocking action happens where you need it - in your digestive system. This targeted approach explains why the medication can support weight management whilst having a predictable side effect profile.
Choose Your Orlistat Option
Understanding how orlistat works helps you choose between the available options. Generic orlistat 120mg offers the same fat-blocking mechanism as branded Xenical 120mg - both contain identical active ingredients and work identically. Generic orlistat 120mg costs £32.99 for 4 weeks (£29.69 with EDM10), whilst Xenical 120mg costs £42.99 for 4 weeks (£38.69 with EDM10). Alli 60mg provides the same mechanism at half the dose.
The Complete Treatment Approach
Orlistat's mechanism works best when combined with dietary changes. Since the medication blocks approximately one third of fat absorption, keeping meals lower in fat (around 15g per meal) helps minimise side effects whilst maximising the weight management benefits. The medication works with each meal containing fat - take one capsule with each main meal, up to three times daily.
Start Your Treatment Today
Now you understand exactly how orlistat works to block fat absorption, you can make an informed decision about your weight management. Complete our online clinical assessment to be reviewed by a UK-licensed prescriber. If suitable, your prescription will be dispensed by our GPhC-registered Leicester pharmacy and delivered discreetly to your address. Use code EDM10 for 10% off your first order.
