How Orlistat Works: Fat Blocking Explained

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Understanding how orlistat works helps explain why it's an effective prescription weight loss treatment. Orlistat blocks approximately one third of dietary fat absorption by inhibiting lipase enzymes in your gut. Available as generic orlistat 120mg from £15.20 per fortnight or branded Xenical from £19.35, both work identically to reduce calorie intake from fat. Now you understand the science, take the next step. Complete our online clinical assessment today and get 10% off with code EDM10. UK prescriber review, GPhC-registered pharmacy supply, next day delivery.

  • Blocks approximately one third of dietary fat absorption
  • Works locally in gut - not absorbed systemically
  • Proven mechanism - inhibits lipase enzymes scientifically
  • Same effect in generic orlistat and branded Xenical
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pricing for mounjaro and wegovy weight loss

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The Science Behind Orlistat - Why It Works

How Orlistat Blocks Fat Absorption

Orlistat works through a scientifically proven mechanism that targets fat digestion in your gut. The active ingredient inhibits lipase enzymes responsible for breaking down dietary fat. When these enzymes are blocked, approximately one third of the fat you eat cannot be digested or absorbed into your body. This unabsorbed fat passes naturally through your digestive system, reducing your calorie intake from dietary fat.

Why This Mechanism Proves Orlistat Works

Unlike appetite suppressants that act on the brain, orlistat's fat-blocking action is measurable and direct. You may notice the effects through changes in bowel movements - this is actually evidence the medication is working to block fat absorption. The mechanism is the same whether you choose generic orlistat 120mg (from £29.69 for 4 weeks with EDM10) or branded Xenical 120mg (from £38.69 for 4 weeks with EDM10).

What Happens to Blocked Fat

The approximately one third of dietary fat that orlistat blocks simply passes through your body unabsorbed. This process is natural and safe - the medication works locally in your gut without being significantly absorbed into your bloodstream. The remaining two thirds of fat is still digested normally, which is why maintaining a lower-fat diet helps minimise side effects while maximising weight loss benefits.

Orlistat vs Xenical - Same Mechanism, Different Price

Both generic orlistat and branded Xenical contain identical 120mg doses of the same active ingredient. The fat-blocking mechanism works identically in both products. Generic orlistat offers the same proven fat absorption blocking at a lower cost - saving approximately £9 per month compared to Xenical. For those preferring a lower-strength option, Alli 60mg provides the same mechanism at half the dose.

Ready to Start? Order Today

Now you understand how orlistat's fat-blocking mechanism works, take action towards your weight loss goals. Our UK-licensed prescribers will assess your suitability following an online clinical consultation. Get 10% off every order with code EDM10 - that's orlistat 120mg from just £15.20 for 2 weeks. Complete your assessment now for next day delivery from our GPhC-registered Leicester pharmacy.

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