How Long Does Orlistat Work Per Dose?
Orlistat Duration of Action Explained
Orlistat works locally in your digestive system for approximately 1-2 hours after each 120mg dose. During this window, it blocks roughly one third of dietary fat from being absorbed. The medication acts on lipase enzymes in your gut, preventing fat breakdown and absorption. Unabsorbed fat passes naturally through your body. This targeted action means orlistat must be taken with each main meal containing fat to maintain effectiveness throughout the day.
Why Choose Private Prescription for Orlistat?
NHS orlistat prescriptions involve lengthy GP appointments and eligibility assessments that can take weeks. Our private prescription service connects you with UK-licensed prescribers online, typically providing same-day approval. Generic orlistat 120mg costs just £29.69 monthly with EDM10, while branded Xenical is £38.69 monthly. Both contain identical active ingredients with the same duration of action - the choice is yours.
Maximising Orlistat's Effectiveness
Since orlistat's action lasts 1-2 hours per dose, timing matters. Take one 120mg capsule immediately before, during, or within one hour of each main meal. If you skip a meal or eat fat-free food, skip that dose. The medication works best alongside a reduced-calorie, lower-fat diet with approximately 15g fat per meal. Higher fat intake increases side effects without improving results.
Private Prescription Process
Complete our secure online health questionnaire covering your medical history, current medications, and weight management goals. A UK-licensed prescriber reviews your information and issues your prescription if clinically appropriate. We dispense from our GPhC-registered pharmacy in Leicester and dispatch with tracked next-day delivery. Your prescription is included in the price - no separate GP fees.
Product Options Available
Choose from generic orlistat 120mg (most cost-effective), branded Xenical 120mg (same clinical effect), or Alli 60mg (lower strength). All work through the same fat-blocking mechanism. Four-week supplies start from £29.69, eight-week from £57.59, and twelve-week from £86.39 with EDM10. Longer supplies offer better value while maintaining the same duration of action per capsule.
