Why Understanding Orlistat's Mechanism Matters
How Orlistat Blocks Fat Absorption
Orlistat works through a scientifically-proven mechanism that targets lipase enzymes in your digestive system. These enzymes are responsible for breaking down dietary fat so your body can absorb it. By inhibiting these enzymes, orlistat prevents approximately one third of the fat you eat from being absorbed. Instead, this unabsorbed fat passes naturally through your body. This mechanism makes orlistat different from appetite suppressants - it works locally in your gut, not your brain. Understanding this helps you see why orlistat requires a prescription and clinical assessment. Generic orlistat 120mg costs from £16.89 for 2 weeks (£15.20 with EDM10), while branded Xenical costs £21.50 for the same period.
Why "Approximately One Third" Matters
Orlistat doesn't block all dietary fat - it blocks approximately one third. This precise mechanism means the remaining two thirds of fat is still digested normally, providing essential fatty acids your body needs. The one-third blocking action is enough to create a meaningful calorie reduction when combined with a lower-fat diet. This targeted approach explains why keeping meals low in fat (around 15g per meal) minimises side effects while maximising benefits. At EverydayMeds, we stock both generic orlistat 120mg and branded Xenical 120mg. A 4-week supply of generic orlistat costs £32.99 (£29.69 with code EDM10), compared to £42.99 for Xenical.
Clinical Proof Behind the Mechanism
The lipase inhibition mechanism has been extensively studied in clinical trials. When orlistat blocks approximately one third of dietary fat absorption, the unabsorbed fat creates a calorie deficit that can support weight loss alongside a reduced-calorie diet. This isn't guesswork - it's measurable fat blocking that works meal by meal. Every time you take orlistat with a fat-containing meal, the mechanism activates. This is why orlistat requires prescription-strength dosing and professional oversight. Our online clinical assessment ensures the 120mg prescription strength is suitable for your individual circumstances.
Orlistat vs Xenical vs Alli - Same Mechanism, Different Strengths
All three products work through identical lipase inhibition, but at different strengths. Orlistat 120mg and Xenical 120mg contain the same dose and block the same amount of fat - approximately one third. The difference is cost, with generic orlistat offering significant savings. Xenical 120mg (branded) costs £128.99 for 12 weeks compared to £95.99 for generic orlistat 120mg. Alli contains 60mg - half the prescription strength - so blocks less dietary fat. Understanding these differences helps you choose the right option following clinical assessment. Use code EDM10 for 10% off any strength.
Start Your Fat Blocking Treatment Today
Now you understand how orlistat's proven mechanism blocks approximately one third of dietary fat, you can make an informed treatment decision. Our UK-licensed prescribers assess suitability through a comprehensive online consultation, with prescriptions dispensed by our GPhC-registered Leicester pharmacy. Choose from 2, 4, 8, or 12-week supplies with next day delivery available. Whether you select cost-effective generic orlistat 120mg from £16.89 or branded Xenical, you're getting the same fat-blocking mechanism that's helped thousands achieve their weight management goals.
