Why Orlistat's Fat-Blocking Mechanism Works
How Orlistat Blocks Fat Absorption
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 system, reducing the calories available for storage. The mechanism starts working with your first dose, making orlistat effective from day one of treatment.
Three Fat-Blocking Options at EverydayMeds
Generic orlistat 120mg offers the most cost-effective option at £32.99 for 4 weeks (£29.69 with EDM10). Xenical 120mg provides the same fat-blocking mechanism as the original branded version for £42.99 (£38.69 with EDM10). Alli 60mg at half strength costs £28.99 for 4 weeks (£26.09 with EDM10). All three products use the same proven mechanism to block approximately one third of dietary fat absorption.
Why Fat-Blocking Works for Weight Management
By preventing approximately one third of dietary fat from being absorbed, orlistat can significantly reduce calorie intake from meals containing fat. Since fat contains 9 calories per gram compared to 4 calories for protein or carbohydrates, blocking fat absorption provides substantial calorie reduction. This mechanism works alongside a reduced-calorie, lower-fat diet to support weight management goals. The fat-blocking effect is directly related to meal fat content - lower fat meals reduce side effects.
How Long Before You See Orlistat Working
Orlistat's fat-blocking mechanism begins immediately with your first dose. You may notice gastrointestinal effects within 24-48 hours when eating fat-containing meals - this indicates the medicine is working by preventing fat absorption. The mechanism works consistently as long as you take orlistat with meals containing fat. Skipping orlistat when eating fat-free meals is acceptable since there's no fat to block.
Maximising Orlistat's Fat-Blocking Effect
To optimise orlistat's mechanism, distribute fat intake evenly across three main meals with no more than 15g fat per meal. Taking orlistat immediately before, during, or up to one hour after meals ensures maximum lipase enzyme inhibition. A daily multivitamin taken at bedtime helps replace fat-soluble vitamins that may be reduced due to orlistat's fat-blocking action. This proven mechanism works best alongside regular physical activity and dietary changes.
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