How Orlistat Works: Alli vs Xenical Fat Blocking UK

pricing for mounjaro and wegovy weight loss

Orlistat works by blocking approximately one third of dietary fat absorption in your gut. Both Alli 60mg and prescription-strength Xenical/Orlistat 120mg use this proven lipase-inhibiting mechanism to support weight management alongside a reduced-calorie, lower-fat diet. Generic orlistat 120mg starts from £15.20 for 2 weeks with code EDM10, whilst Xenical costs £19.35 for the same period. Understanding how orlistat blocks fat absorption can help you choose the right treatment. Order today from our GPhC-registered Leicester pharmacy with next-day delivery and 10% off every order using EDM10.

  • Blocks approximately one third of dietary fat from being absorbed
  • Works locally in the gut, not absorbed into bloodstream significantly
  • Three strength options: Alli 60mg, Orlistat 120mg, Xenical 120mg
  • 10% off all orders with EDM10 - prescription included in price
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pricing for mounjaro and wegovy weight loss

*Pricing shown in some areas of this page may not be up to date. Please refer to the “Our Pricing Table” or the price shown after your consultation for the latest live pricing.

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Why Orlistat's Fat-Blocking Mechanism Works

How Orlistat Blocks Fat Absorption

Orlistat works through a targeted mechanism that inhibits lipase enzymes in your digestive system. These enzymes normally break down dietary fat so it can be absorbed into your body. When orlistat blocks these lipases, approximately one third of the fat you eat cannot be digested or absorbed. This unabsorbed fat passes naturally through your system, reducing the calories your body takes in from dietary fat. This mechanism makes orlistat fundamentally different from appetite suppressants - it works locally in your gut rather than affecting your brain or metabolism.

Alli vs Orlistat vs Xenical: Same Mechanism, Different Strengths

All three products use identical fat-blocking technology. Alli 60mg provides a lower-strength option at £26.09 for 4 weeks with EDM10, whilst prescription-strength orlistat 120mg costs £29.69 for 4 weeks with EDM10. Xenical 120mg, the branded version, costs £38.69 for 4 weeks with EDM10. The higher 120mg dose blocks a greater proportion of dietary fat but requires clinical assessment by our UK-licensed prescribers. Understanding this mechanism helps explain why keeping meals low in fat reduces side effects - less unabsorbed fat means fewer gastrointestinal effects.

Why This Mechanism Supports Weight Management

The fat-blocking mechanism works because fat contains 9 calories per gram - more than double that of carbohydrates or protein. By preventing approximately one third of dietary fat absorption, orlistat can significantly reduce calorie intake when used alongside a reduced-calorie, lower-fat diet. Clinical studies show this mechanism can support meaningful weight loss when combined with lifestyle changes. The key is consistency - taking orlistat with each main meal containing fat ensures the lipase-blocking effect works throughout your eating pattern.

Order Today: Choose Your Orlistat Strength

Now you understand how orlistat's proven fat-blocking mechanism works, you can choose the right strength for your needs. Start with generic orlistat 120mg at £57.59 for 8 weeks with EDM10, or try Alli 60mg at £49.49 for 8 weeks with EDM10. All options include online clinical assessment by UK-licensed prescribers, dispensing by our GPhC-registered Leicester pharmacy, and next-day delivery. Use code EDM10 for 10% off every order. Complete your assessment today and start your weight management journey with proven fat-blocking technology.

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