Why Understanding the Mechanism Matters Before You Buy
How Orlistat Blocks Dietary Fat Absorption
Orlistat works by inhibiting lipase enzymes in your digestive system. These enzymes normally break down dietary fat so your body can absorb it. When orlistat blocks these enzymes, approximately one third of the fat you eat cannot be digested or absorbed. This unabsorbed fat passes naturally through your digestive system and is excreted from your body.
The Science Behind Fat Blocking
Unlike stimulant-based weight loss treatments that affect your brain, orlistat acts locally in your gut. It's not absorbed into your bloodstream in significant amounts. The medication targets pancreatic and gastric lipases specifically, preventing them from breaking down triglycerides into absorbable fatty acids and glycerol. This mechanism means orlistat only affects dietary fat - it doesn't impact carbohydrate, protein, or alcohol calories.
What This Means for Your Weight Management
By blocking approximately one third of dietary fat absorption, orlistat helps reduce your overall calorie intake when used alongside a reduced-calorie, lower-fat diet. The key word is "approximately" - orlistat is not a complete fat blocker. The remaining two thirds of dietary fat is still absorbed normally, which is why maintaining a lower-fat diet is essential for both effectiveness and minimising side effects.
Orlistat vs Xenical vs Alli: Same Mechanism, Different Doses
At EverydayMeds, we offer three options with the same proven mechanism. Orlistat 120mg (generic) costs £29.69 for 4 weeks with EDM10, providing excellent value. Xenical 120mg (branded) costs £38.69 for 4 weeks with EDM10 - identical clinical effect but higher cost. Alli 60mg at £26.09 for 4 weeks with EDM10 offers half the dose for those preferring a lower-strength option.
Why the Mechanism Proves Orlistat Works
The fat-blocking mechanism is measurable and observable. Many patients notice oily stools or changes in bowel movements - whilst these can be uncomfortable, they're actually proof the medication is working by preventing fat absorption. This visible confirmation of the mechanism helps explain why orlistat has been prescribed for weight management across the UK for many years.
Getting Started with Orlistat
Now you understand how orlistat works, you can make an informed decision about treatment. Following an online clinical assessment by our UK-licensed prescribers, suitable patients can access orlistat with next day delivery. Our GPhC-registered pharmacy ensures you receive genuine medication at competitive prices. Use code EDM10 for 10% off every order.
