Why Understanding Orlistat's Mechanism Matters
How Orlistat Works in Your Body
Orlistat works through a clinically studied mechanism called lipase inhibition. When you take orlistat with meals containing fat, it blocks enzymes called lipases in your digestive system. These enzymes normally break down dietary fat so your body can absorb it. By inhibiting approximately one third of these enzymes, orlistat prevents roughly one third of the fat you eat from being absorbed into your bloodstream.
The unabsorbed fat passes naturally through your digestive system and is eliminated from your body. This mechanism reduces your calorie intake from dietary fat, supporting weight management when used alongside a reduced-calorie, lower-fat diet and increased physical activity.
Three Treatment Options Available
Understanding how orlistat works helps you choose the right option. Generic orlistat 120mg offers the most cost-effective prescription treatment at £32.99 for 4 weeks (£29.69 with EDM10). Xenical 120mg contains the identical active ingredient and dose but as the original branded version at £42.99 for 4 weeks (£38.69 with EDM10). Alli 60mg provides half the prescription dose for those preferring a lower-strength starting point at £28.99 for 4 weeks (£26.09 with EDM10).
Instructions for Optimal Results
Take one capsule with each main meal containing fat - up to three times daily. For 120mg strength products, each capsule should be taken immediately before, during, or up to one hour after eating. If you skip a meal or eat a fat-free meal, you can skip that dose. The key to success lies in understanding that orlistat works best when your meals contain no more than approximately 15g of fat each.
Higher fat meals increase the likelihood of gastrointestinal side effects, as more unabsorbed fat passes through your system. This is actually a sign the medication is working - blocking that excess dietary fat from being absorbed into your body.
Clinical Assessment and Next Steps
All orlistat products require clinical assessment through our online consultation process. A UK-licensed prescriber reviews your medical history, current medications, and weight management goals to determine suitability. Treatment may be appropriate for adults with a BMI of 30 or above, or 28 or above with weight-related health conditions like type 2 diabetes or high blood pressure.
Our GPhC-registered pharmacy in Leicester provides next-day delivery across the UK. Every order includes 10% off with code EDM10, making your 12-week supply just £86.39 for generic orlistat, £116.09 for Xenical, or £116.99 for Alli.
Start Your Treatment Today
Now you understand how orlistat works to block approximately one third of dietary fat absorption, you can make an informed decision about your weight management journey. Complete your online consultation today to access prescription-strength orlistat through our regulated UK pharmacy service.
