Compare Orlistat vs Xenical: Which Should You Choose?
Orlistat vs Xenical: The Key Differences
Both orlistat 120mg and Xenical 120mg contain exactly the same active ingredient at identical doses. Clinically, they work in precisely the same way - blocking approximately one third of dietary fat absorption to support weight management alongside a reduced-calorie, lower-fat diet. The primary difference lies in cost and manufacturer preferences.
Generic orlistat 120mg starts from £32.99 for 84 capsules (4-week supply), or £29.69 with discount code EDM10. Branded Xenical costs £42.99 for the same quantity (£38.69 with EDM10) - a saving of approximately £9 per month when choosing generic orlistat.
How Both Medications Work
Whether you choose orlistat or Xenical, the mechanism remains identical. Both work 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 dietary fat as part of a structured weight management programme.
Both medications require the same dosing schedule: one 120mg capsule taken with each main meal containing fat, up to three times daily. Neither works alone - both must be combined with a reduced-calorie, lower-fat diet and increased physical activity for optimal weight management support.
Available Supplies and Pricing
EverydayMeds stocks both options in multiple supply durations:
Orlistat 120mg (Generic): 2 weeks (42 capsules) £16.89, 4 weeks (84 capsules) £32.99, 8 weeks (168 capsules) £63.99, 12 weeks (252 capsules) £95.99
Xenical 120mg (Branded): 2 weeks (42 capsules) £21.50, 4 weeks (84 capsules) £42.99, 8 weeks (168 capsules) £86.99, 12 weeks (252 capsules) £128.99
All prices reduce by 10% with code EDM10, available for new and returning customers. Longer supplies offer better value - the 12-week generic orlistat supply works out at less than £22 per month with discount.
Who May Be Suitable for Treatment
Both orlistat and Xenical may be suitable for adults with a BMI of 30 kg/m² or above, or 28 kg/m² or above with weight-related health factors such as type 2 diabetes or high blood pressure. Suitability is determined through individual clinical assessment by UK-licensed prescribers - not everyone will be eligible for treatment.
Our online consultation process reviews your medical history, current medications, and weight management goals. Following prescriber approval, your chosen medication is dispensed by our GPhC-registered pharmacy and delivered discreetly to your address with next-day delivery options available.
Side Effects and Management
Since both medications contain identical active ingredients, side effects are the same. Most are gastrointestinal and directly related to dietary fat intake - keeping meals low in fat (approximately 15g per meal) significantly reduces side effects while maintaining clinical effectiveness.
Common side effects include oily stools, increased bowel movement frequency, and abdominal discomfort. These effects indicate the medication is working but can be managed through dietary adaptation. A daily multivitamin taken at bedtime is recommended, as both medications may reduce fat-soluble vitamin absorption.
Making Your Choice: Generic vs Branded
Your choice between orlistat and Xenical often comes down to personal preference and budget considerations. Some patients prefer branded Xenical for manufacturer familiarity, while others choose generic orlistat for value without compromising clinical effect.
Both undergo the same rigorous UK regulatory approval process and meet identical safety and efficacy standards. Whether you choose cost-effective generic orlistat or branded Xenical, you receive the same clinical support for weight management as part of your structured programme.


