Why Understanding How Orlistat Works Matters
Orlistat Classification: Prescription Medicine, Not Controlled
Orlistat isn't classified as a controlled substance in the UK—it's a prescription-only medicine (POM) regulated by the MHRA. This means while you need a prescription from a qualified UK prescriber, it's not subject to controlled drug restrictions. The 120mg strength requires clinical assessment, while Alli 60mg is available at a lower dose. At EverydayMeds, our online prescription service makes accessing orlistat straightforward, with generic versions from £15.20 for 2 weeks using code EDM10.
The Science: How Orlistat Blocks Fat Absorption
Orlistat works by inhibiting lipase enzymes in your digestive system. These enzymes normally break down dietary fat so your body can absorb it. When orlistat blocks these enzymes, approximately one third of the fat you eat passes through undigested and is naturally eliminated. This isn't a complete fat blocker—two thirds of dietary fat is still absorbed normally, but reducing one third can significantly impact your calorie intake when combined with a lower-fat diet.
Why This Mechanism Proves Effectiveness
The fat-blocking action is immediate and measurable—you may notice oily stools, which actually confirms the medication is working. Unlike appetite suppressants that affect brain chemistry, orlistat acts locally in your gut without being significantly absorbed into your bloodstream. This targeted mechanism means it directly addresses dietary fat calories, which are the most calorie-dense macronutrient at 9 calories per gram.
Generic Orlistat vs Xenical: Same Mechanism, Different Prices
Both generic orlistat 120mg and branded Xenical 120mg contain identical active ingredients and work exactly the same way. The choice comes down to preference and budget. Generic orlistat offers exceptional value at £29.69 for 4 weeks with EDM10, compared to Xenical at £38.69. Both block approximately one third of dietary fat absorption through the same lipase inhibition mechanism—the £9 monthly saving with generic makes it a popular choice.
Maximising Results: Diet and Orlistat Work Together
Understanding orlistat's mechanism helps you use it effectively. Since it blocks fat absorption, keeping meals to around 15g fat each minimises side effects while maximising benefit. High-fat meals lead to more unabsorbed fat and increased gastrointestinal effects. The medication works best alongside a reduced-calorie, lower-fat diet—the combination of reduced fat intake plus blocked absorption creates a significant calorie deficit for weight management.
Order Today: Fast Access to Orlistat
Now you understand exactly how orlistat works to block fat absorption, you can order with confidence. Our online clinical assessment takes minutes, reviewed by UK-licensed prescribers. Choose from our full range: generic orlistat 120mg from £15.20 (2 weeks), Xenical 120mg from £19.35, or Alli 60mg from £26.09—all with 10% off using EDM10. Next day delivery available from our GPhC-registered Leicester pharmacy. The science is proven, the mechanism is clear—start your weight management journey today.
