Why Understanding the Mechanism Matters for Your Purchase
The Science Behind Orlistat's Fat-Blocking Action
Orlistat works through a precise mechanism called lipase inhibition. When you eat, your body produces lipase enzymes to break down dietary fat so it can be absorbed through your intestinal wall. Orlistat binds to these lipase enzymes, preventing them from doing their job. This means approximately one third of the fat you consume cannot be digested or absorbed - it simply passes through your body naturally.
This mechanism sets orlistat apart from other weight management approaches. Rather than acting on your brain or nervous system like appetite suppressants, orlistat works entirely within your digestive system. The unabsorbed fat is eliminated through normal bowel movements, reducing your caloric intake from dietary fat sources.
Why "Approximately One Third" Makes All the Difference
Understanding that orlistat blocks approximately one third of dietary fat absorption is crucial for setting realistic expectations. This isn't a complete fat blocker - your body still absorbs two thirds of the fat you eat normally. However, this reduction can significantly impact your daily calorie intake when combined with a lower-fat diet.
For example, if your meal contains 30g of fat (270 calories from fat), orlistat may prevent around 10g of that fat from being absorbed, saving you approximately 90 calories per meal. Over three meals daily, this could reduce your fat-derived calorie intake by up to 270 calories per day. Generic orlistat 120mg provides this proven mechanism from just £15.20 for 2 weeks with code EDM10.
Comparing Your Treatment Options
Whether you choose generic orlistat 120mg or branded Xenical 120mg, the fat-blocking mechanism remains identical. Both contain the same active ingredient at the same strength, delivering the same clinical effect. The key difference lies in cost:
Orlistat 120mg (generic): 4-week supply for £29.69 with EDM10
Xenical 120mg (branded): 4-week supply for £38.69 with EDM10
Alli 60mg offers the same mechanism at half the dose, providing a gentler introduction to orlistat treatment. At 60mg, it blocks a smaller proportion of dietary fat, which may result in milder side effects while you adapt to treatment.
How the Mechanism Affects Your Daily Experience
The fat-blocking action directly influences what you might experience during treatment. When orlistat prevents fat absorption, that unabsorbed fat must leave your body somehow. This leads to the characteristic gastrointestinal effects like oily stools or increased bowel movement frequency - these are actually signs the mechanism is working.
Keeping your fat intake low (around 15g per meal) works with orlistat's mechanism rather than against it. Lower fat meals mean less unabsorbed fat to eliminate, reducing the likelihood of uncomfortable side effects while maintaining the weight management benefits.
Getting Started With Orlistat Today
Now you understand how orlistat's proven fat-blocking mechanism works, you can make an informed treatment choice. Our online clinical assessment takes just minutes to complete, and our UK-licensed prescribers will review your suitability for treatment. Choose from our range of pack sizes:
2-week supply (42 capsules): £15.20 with EDM10
4-week supply (84 capsules): £29.69 with EDM10
8-week supply (168 capsules): £57.59 with EDM10
12-week supply (252 capsules): £86.39 with EDM10
All orders qualify for next day delivery from our GPhC-registered pharmacy in Leicester. The prescription is included in the price - no separate GP appointment needed.
