Understanding Orlistat's Calorie-Blocking Mechanism
How Orlistat Blocks Dietary Fat Calories
Orlistat works by inhibiting lipase enzymes in your digestive system, preventing approximately one third of the fat you eat from being absorbed. This unabsorbed fat passes naturally through your body, effectively reducing the calorie intake from dietary fats. When combined with a reduced-calorie, lower-fat diet, this mechanism may help support weight management goals.
Calorie Impact: What This Means for Weight Loss
Fat contains 9 calories per gram - the highest calorie density of any macronutrient. By blocking roughly one third of dietary fat absorption, orlistat can significantly reduce your overall calorie intake from fat sources. For example, if you consume 60 grams of fat daily, orlistat may prevent approximately 20 grams (180 calories) from being absorbed. However, this works best when fat intake is distributed evenly across three main meals.
Prescription Orlistat Options and Pricing
We offer three clinically equivalent options following online assessment by UK-licensed prescribers. Generic orlistat 120mg provides excellent value at £32.99 for 4 weeks (£29.69 with EDM10). Branded Xenical 120mg costs £42.99 for 4 weeks (£38.69 with EDM10) - both contain identical active ingredients. For those preferring lower-strength treatment, Alli 60mg is available at £28.99 for 4 weeks (£26.09 with EDM10).
Maximising Calorie-Blocking Benefits
To optimise orlistat's calorie-blocking effects, limit fat intake to approximately 30% of daily calories, spread across three main meals. This approach maximises the medication's effectiveness while minimising gastrointestinal side effects. Take one capsule with each main meal containing fat - if you skip a meal or eat a fat-free meal, you can skip that dose.
Professional Support for Your Weight Loss Journey
Our online clinical assessment ensures orlistat is suitable for your individual circumstances. Following prescriber approval, we dispense from our GPhC-registered pharmacy in Leicester with next day delivery available. The prescription is included in the price - no separate GP appointment required. Use code EDM10 for 10% off every order, whether you're a new or returning customer.
Getting Started Today
Ready to begin blocking those fat calories? Complete our confidential online health questionnaire for review by qualified UK prescribers. Subject to clinical assessment, we'll dispense and dispatch your orlistat with tracked, discreet delivery. Start your weight management programme with professional prescription support and transparent pricing.


