Understanding Orlistat's Mechanism - Why It Works
How Orlistat Blocks Fat Absorption
Orlistat works through a scientifically proven mechanism that targets lipase enzymes in your digestive system. These enzymes normally break down dietary fat so it can be absorbed into your body. Orlistat inhibits these lipases, preventing approximately one third of the fat you eat from being digested and absorbed. This unabsorbed fat passes naturally through your system, reducing the calories your body takes in from dietary fat.
The mechanism is local to your gut - orlistat isn't significantly absorbed into your bloodstream, making it different from stimulant-based weight loss treatments. This targeted approach means it works directly where fat digestion occurs. Generic Orlistat 120mg costs from £29.69 for 4 weeks with EDM10, while branded Xenical 120mg is £38.69 for the same supply.
Why This Mechanism Proves Effectiveness
Understanding how orlistat works shows why it's effective for weight management. By consistently blocking approximately one third of dietary fat absorption with each meal, you reduce your caloric intake from fat without having to perfectly calculate every gram. The mechanism is immediate - it works with each dose you take alongside meals containing fat.
This isn't a complete fat blocker - the remaining two thirds of fat is still absorbed normally, which is why maintaining a reduced-calorie, lower-fat diet enhances results. The lower your meal's fat content, the fewer gastrointestinal side effects you're likely to experience while still benefiting from the fat-blocking action.
Three Orlistat Options - Same Proven Mechanism
All our orlistat products work through the same lipase inhibition mechanism. Generic Orlistat 120mg offers the most cost-effective option at £15.20 for 2 weeks with EDM10. Xenical 120mg provides the branded version at £19.35 for 2 weeks with EDM10 - identical mechanism, same clinical effect. Alli 60mg at half strength costs £26.09 for 4 weeks with EDM10, suitable for those preferring a lower-dose starting point.
Your prescriber will determine which strength and product suits your individual circumstances following online clinical assessment. All require the same commitment to a reduced-calorie, lower-fat diet to maximise the fat-blocking benefits.
Getting Started With Proven Fat-Blocking Action
Now you understand exactly how orlistat's mechanism works to block approximately one third of dietary fat, you can make an informed treatment choice. Complete our online clinical assessment where a UK-licensed prescriber will review your suitability for this proven fat-blocking medication.
Following prescriber approval, we'll dispense and dispatch from our GPhC-registered Leicester pharmacy with next day delivery. Your prescription is included in the price - no separate GP visit needed. Use code EDM10 for 10% off every order, whether you choose generic orlistat, branded Xenical, or Alli.


