Why Understanding Orlistat's Mechanism Matters
How Orlistat Blocks Fat Absorption
Orlistat works by inhibiting lipase enzymes in your digestive system. These enzymes normally break down dietary fat so it can be absorbed into your bloodstream. When orlistat blocks approximately one third of these enzymes, that proportion of fat cannot be digested or absorbed. This unabsorbed fat passes through your body naturally, reducing the calories you absorb from fatty foods. This mechanism proves orlistat works locally in your gut, not as a brain stimulant like some weight loss treatments.
Three Orlistat Options Available
Understanding how orlistat works helps you choose the right strength. Generic orlistat 120mg capsules cost £32.99 for 4 weeks (£29.69 with EDM10), providing maximum prescription strength. Branded Xenical 120mg contains identical active ingredient at £42.99 for 4 weeks (£38.69 with EDM10). Both require prescription following clinical assessment. Alli 60mg offers half-strength treatment at £28.99 for 4 weeks (£26.09 with EDM10), blocking a smaller proportion of dietary fat with typically milder side effects.
Why the Mechanism Creates Side Effects
Knowing how orlistat works explains potential side effects. When approximately one third of dietary fat passes through unabsorbed, this can cause oily stools, increased bowel movements, or oily spotting. These effects prove the medication is working as intended. Keeping meals to around 15g fat each significantly reduces side effects whilst maintaining orlistat's effectiveness. The mechanism means high-fat meals increase side effect likelihood.
Maximising Orlistat's Fat-Blocking Action
Understanding orlistat's mechanism helps optimise treatment. Take one 120mg capsule with each main meal containing fat, up to three times daily. The enzyme inhibition works meal by meal, so consistent dosing maintains steady fat-blocking action. If you skip a meal or eat fat-free food, you can omit that dose. This targeted mechanism means orlistat doesn't affect carbohydrates, protein, or alcohol calories.
Order Your Orlistat Treatment Today
Now you understand how orlistat works by blocking approximately one third of dietary fat absorption, you can make an informed treatment choice. Our 8-week orlistat supply costs £63.99 (£57.59 with EDM10), whilst 12-week Xenical costs £128.99 (£116.09 with EDM10). Complete your online clinical assessment today for next-day delivery from our GPhC-registered Leicester pharmacy. UK-licensed prescribers review every application, ensuring appropriate treatment based on orlistat's proven mechanism.
