Why Understanding the Mechanism Matters for Your Purchase
The Science Behind Orlistat's Fat-Blocking Action
Orlistat works through a specific mechanism called lipase inhibition. In your digestive system, enzymes called lipases break down dietary fat so it can be absorbed into your bloodstream. Orlistat blocks these lipase enzymes, preventing approximately one third of the fat you eat from being digested and absorbed. This unabsorbed fat passes naturally through your body, reducing the calories you absorb from dietary fat.
What This Means for Your Weight Management
When you understand that orlistat blocks approximately one third of dietary fat absorption, you can see why it's prescribed alongside a reduced-calorie, lower-fat diet. The medication doesn't work on carbohydrates, proteins, or alcohol - only on dietary fat. This targeted action explains why keeping meals low in fat (around 15g per meal) maximises effectiveness whilst minimising gastrointestinal side effects.
Choosing Your Orlistat Treatment Option
All three products work through the same mechanism but at different strengths. Generic orlistat 120mg offers the most cost-effective option at £32.99 for 4 weeks (£29.69 with EDM10). Xenical 120mg provides the same clinical effect as the branded version for £42.99 for 4 weeks (£38.69 with EDM10). Alli 60mg at half the prescription strength costs £28.99 for 4 weeks (£26.09 with EDM10).
Why the Mechanism Proves Effectiveness
The fact that orlistat works locally in your gut, blocking fat absorption rather than acting as a brain stimulant, demonstrates its evidence-based approach to weight management. Clinical studies show this lipase inhibition mechanism can support weight loss when combined with dietary changes. The side effects you may experience - such as oily stools - are actually proof the medication is working by preventing fat absorption.
Getting Started with Your Online Assessment
Now you understand how orlistat blocks approximately one third of dietary fat through lipase inhibition, you can make an informed choice about treatment. Our UK-licensed prescribers will assess your suitability through an online consultation, considering your BMI, medical history, and weight management goals. Once prescribed, your medication is dispensed by our GPhC-registered Leicester pharmacy with next-day delivery available.
