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How Long Does Orlistat Stay In Your System?
Orlistat has a relatively short duration in your body, which is important for understanding how this prescription weight loss medication works. The active ingredient is minimally absorbed into your bloodstream - approximately 95% remains in your digestive system where it blocks roughly one third of dietary fat absorption. Most orlistat is eliminated from your body within 3-5 days after your last dose, with the majority excreted naturally through bowel movements within 48-72 hours.
This short systemic exposure means orlistat's effects are directly related to when you take it. Each 120mg capsule works for the meal you take it with, making consistent dosing essential for effective weight management support.
Orlistat Pricing and Pack Sizes
EverydayMeds offers competitive pricing on prescription orlistat with 10% off every order using code EDM10. Generic orlistat 120mg costs £32.99 for 4 weeks (£29.69 with discount), while branded Xenical costs £42.99 (£38.69 with EDM10). Both contain identical active ingredients and provide the same clinical effect - the key difference is cost savings with the generic option.
Available pack sizes include 2-week supplies from £15.20, 8-week supplies from £57.59, and 12-week supplies from £86.39 with EDM10. Our GPhC-registered pharmacy ensures all medication meets UK pharmaceutical standards.
Clinical Assessment Process
Orlistat 120mg requires a prescription following clinical assessment by a UK-licensed healthcare professional. Our online consultation process reviews your medical history, current medications, and weight management goals to determine treatment suitability. The prescriber will assess whether orlistat may be appropriate based on your individual circumstances and BMI.
Once approved, your prescription is dispensed by our Leicester-based pharmacy and dispatched with next-day delivery across the UK. The prescription cost is included in our pricing - no separate GP appointment needed.
How Orlistat Works for Weight Management
Orlistat works by inhibiting lipase enzymes in your digestive system, preventing approximately one third of dietary fat from being absorbed. This unabsorbed fat passes naturally through your body, potentially reducing calorie intake from fatty meals. The medication must be used alongside a reduced-calorie, lower-fat diet and increased physical activity for optimal results.
Because orlistat acts locally in your gut rather than systemically, side effects are primarily gastrointestinal and can be minimised by keeping fat intake low - approximately 15g fat per meal. This approach reduces the likelihood of oily stools or other fat-related side effects.
Generic Orlistat vs Xenical
Both generic orlistat and branded Xenical contain 120mg of the same active ingredient and provide clinically equivalent effects. The choice often comes down to personal preference and cost considerations. Generic orlistat offers significant savings - approximately £9 less per month compared to Xenical, making it an attractive option for longer-term treatment.
Some patients prefer the branded Xenical option, while others choose generic orlistat for better value. Both require the same prescription process and clinical assessment through our regulated online service.


