Why Orlistat's Mechanism Makes It Worth Buying
How Orlistat Works in Your Body
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 absorbed from fat-containing meals.
Unlike stimulant-based weight loss treatments that act on the brain, orlistat works locally in your gut and is not significantly absorbed into your bloodstream. This targeted mechanism makes it a clinically proven option for adults with a BMI of 30 or above, or 28 or above with weight-related health conditions.
Duration of Treatment and Long-Term Use
Clinical studies show orlistat can be used safely for extended periods when monitored by healthcare professionals. Many patients use orlistat for 12 weeks initially, with treatment continuing for up to 2 years where clinically appropriate. The key is maintaining the reduced-calorie, lower-fat diet that makes orlistat effective while minimising gastrointestinal side effects.
At EverydayMeds, you can order orlistat in flexible quantities: 2 weeks (£16.89), 4 weeks (£32.99), 8 weeks (£63.99), or 12 weeks (£95.99). Save 10% on every order with code EDM10, making 12 weeks just £86.39.
Why the Mechanism Proves Effectiveness
The fact that orlistat blocks approximately one third of dietary fat absorption is scientifically measurable - patients often notice oily stools, which actually demonstrates the medication is working as intended. This visible proof of unabsorbed fat elimination gives confidence that orlistat is actively reducing calorie absorption from your diet.
Generic orlistat 120mg and branded Xenical contain identical active ingredients at the same dose, offering the same fat-blocking mechanism. Orlistat costs £29.69 for 4 weeks with EDM10, while Xenical costs £38.69 - both requiring the same clinical assessment by our UK-licensed prescribers.
Choosing Your Orlistat Treatment Duration
Your prescriber will determine appropriate treatment duration based on your individual circumstances, weight loss progress, and tolerance of the medication. Starting with shorter supplies allows you to assess how orlistat works for you before committing to longer treatment periods.
Many patients find that understanding orlistat's mechanism helps them maintain the lower-fat diet essential for success. When you eat meals containing more than 15g fat, the unabsorbed fat causes more noticeable side effects - your body's natural feedback system encouraging adherence to healthy eating patterns.


