Why Orlistat's Fat-Blocking Mechanism Works
How Orlistat Blocks Fat Absorption
Orlistat works by inhibiting lipase enzymes in your digestive system that normally break 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, effectively reducing the calories you absorb from fatty meals. Unlike appetite suppressants that work in the brain, orlistat acts locally in your gut and is not significantly absorbed into your bloodstream.
What This Means for Weight Loss
By blocking approximately one third of dietary fat absorption, orlistat can help create the calorie deficit needed for weight loss when combined with a reduced-calorie, lower-fat diet. Each gram of fat contains nine calories, so blocking fat absorption can significantly reduce your daily calorie intake. The mechanism is most effective when you eat meals containing fat - if you eat a fat-free meal, you can skip that dose of orlistat as there's no fat to block.
Choosing Between Orlistat Products
Generic orlistat 120mg and branded Xenical 120mg contain identical active ingredients and work through the same fat-blocking mechanism. Generic orlistat offers excellent value at £29.69 for a four-week supply with code EDM10, while Xenical costs £38.69 for the same period. Both require prescription following online clinical assessment. Alli 60mg provides half the dose at £26.09 for four weeks, blocking a smaller proportion of dietary fat but with typically milder side effects.
Maximising Results Through Mechanism Understanding
Understanding that orlistat blocks approximately one third of dietary fat helps you optimise your diet for best results and minimal side effects. Keeping each meal to around 15g of fat maximises effectiveness while reducing gastrointestinal side effects. Higher fat meals lead to more unabsorbed fat being eliminated, causing the oily stools that signal the medication is working. This mechanism-based approach to eating helps many patients achieve sustainable weight loss.
Getting Started with Confidence
EverydayMeds' GPhC-registered pharmacy provides orlistat following online clinical assessment by UK-licensed prescribers. The process takes minutes to complete, with prescriber review typically within hours and next-day discreet delivery across the UK. Your 12-week supply of generic orlistat costs just £86.39 with EDM10, including prescription and delivery. Now you understand how orlistat's proven fat-blocking mechanism works, start your assessment today.
