Why Orlistat's Calorie-Blocking Mechanism Works
How Orlistat Reduces Calorie Absorption
Orlistat reduces calories through a targeted mechanism that blocks approximately one third of dietary fat from being absorbed by your body. The active ingredient inhibits lipase enzymes in your digestive system, preventing them from breaking down fat molecules. When fat cannot be digested properly, it passes through your body naturally rather than being absorbed as calories. This means fewer calories from fat are stored, supporting your weight management goals alongside a reduced-calorie diet.
The Science Behind Calorie Reduction
Each gram of fat contains 9 calories—more than double the calories in carbohydrates or protein. By blocking approximately one third of dietary fat absorption, orlistat can significantly reduce your daily calorie intake from fat sources. For example, if you consume 60 grams of fat daily, orlistat may prevent around 20 grams (180 calories) from being absorbed. This calorie reduction happens automatically with each meal containing fat, making orlistat an effective tool for weight management when combined with dietary changes.
Proven Mechanism You Can Trust
Orlistat's calorie-blocking mechanism has been extensively studied and is approved by the MHRA for weight management in the UK. Unlike appetite suppressants that work on brain chemistry, orlistat acts locally in your gut without significant absorption into your bloodstream. This targeted approach means the medication works where dietary fat is processed, providing a reliable method of reducing calorie absorption. Clinical evidence supports orlistat's effectiveness when used alongside a reduced-calorie, lower-fat diet and increased physical activity.
Available Products and Pricing
We offer three orlistat options to suit different needs and budgets. Generic orlistat 120mg provides the most cost-effective choice at £32.99 for 4 weeks (£29.69 with EDM10). Branded Xenical 120mg contains the same active ingredient at £42.99 for 4 weeks (£38.69 with EDM10). Alli 60mg offers a lower-strength option at £28.99 for 4 weeks (£26.09 with EDM10). All products work through the same calorie-blocking mechanism, with 120mg doses providing maximum fat-blocking potential.
Start Your Treatment Today
Now you understand how orlistat reduces calories by blocking approximately one third of dietary fat absorption, you can make an informed decision about treatment. Our online clinical assessment takes just minutes to complete, and if suitable, your prescription will be reviewed by a UK-licensed prescriber. With next-day delivery from our GPhC-registered pharmacy and 10% off every order with code EDM10, starting your weight management journey has never been easier. Complete your assessment now and take the first step towards effective calorie reduction.


