How Orlistat's Fat-Blocking Action Drives Results
How Orlistat Works to Block Dietary Fat
Orlistat works by inhibiting lipase enzymes in your digestive system. These enzymes normally break down dietary fat so it can be absorbed. When orlistat blocks these enzymes, approximately one third of the fat you eat cannot be digested or absorbed into your body. This unabsorbed fat passes naturally through your system, reducing the calories you absorb from fatty foods.
This mechanism makes orlistat different from appetite suppressants - it works locally in your gut, not your brain. The fat-blocking action is directly related to what you eat, which is why it works best alongside a reduced-calorie, lower-fat diet.
Why the Mechanism Matters for Weight Loss
Understanding how orlistat blocks fat absorption helps explain why it can support weight management. By reducing approximately one third of dietary fat absorption, orlistat helps create the calorie deficit needed for weight loss. Each gram of fat contains 9 calories, so blocking fat absorption can significantly reduce your calorie intake when used correctly.
The key is consistency - taking orlistat 120mg three times daily with meals containing fat, combined with keeping meals low in fat to minimise side effects. Generic orlistat 120mg costs just £29.69 for 4 weeks with EDM10, while branded Xenical costs £38.69 for the same period.
Orlistat vs Xenical vs Alli - Same Mechanism, Different Strengths
All three products use the same fat-blocking mechanism, but at different strengths. Prescription orlistat 120mg and Xenical 120mg contain identical doses and work identically - the difference is cost. Generic orlistat offers the same fat-blocking effect as branded Xenical but costs around £9 less per month.
Alli 60mg contains half the dose, so blocks a smaller proportion of dietary fat. This lower strength may suit those preferring a gentler introduction to orlistat treatment. Alli costs £49.49 for 8 weeks with EDM10 code.
Clinical Evidence Supporting Fat-Blocking Action
Orlistat's fat-blocking mechanism has been extensively studied in clinical trials. The approximately one-third fat absorption reduction has been consistently demonstrated, supporting its use for weight management in adults with obesity or overweight with weight-related health conditions.
Following online clinical assessment by our UK-licensed prescribers, orlistat may be prescribed for adults with BMI 30+ or BMI 28+ with conditions like type 2 diabetes or high blood pressure. The assessment ensures the fat-blocking mechanism is appropriate for your individual circumstances.
Buy Orlistat Online - How to Get Started
Ready to try orlistat's proven fat-blocking action? Our online prescription service makes access simple. Complete the clinical questionnaire, receive prescriber review, and get genuine orlistat delivered next day from our GPhC-registered Leicester pharmacy.
Choose from orlistat 120mg (from £15.20 per fortnight), Xenical 120mg (from £19.35), or Alli 60mg (from £26.09 per month). All prices include 10% off with code EDM10. Start your order today and experience how orlistat's fat-blocking mechanism can support your weight management goals.


