Expert UK Pharmacy Guidance on Orlistat Side Effects
Why Orlistat Causes Oily Stool - The Science Explained
Orlistat causes oily stool because it blocks approximately one third of dietary fat from being absorbed in your digestive system. As a lipase inhibitor, orlistat prevents enzymes from breaking down fat molecules, meaning unabsorbed fat passes naturally through your body. This mechanism is exactly why the medication works for weight management - but it also explains the characteristic oily discharge many patients experience.
At EverydayMeds, our UK-licensed prescribers ensure you understand this process before prescribing orlistat 120mg (from £15.20 with EDM10), Xenical 120mg (from £19.35), or recommending Alli 60mg (from £26.09). Understanding why oily stool occurs helps you prepare effectively for treatment.
What to Expect: Oily Stool Characteristics
Oily stool from orlistat typically appears as fatty, loose stools or oily spotting on underwear. The severity directly relates to the fat content of your meals - higher fat intake increases oily discharge, whilst lower-fat meals (approximately 15g fat per meal) significantly reduce these effects. This is why our prescribers emphasise following a reduced-calorie, lower-fat diet alongside orlistat treatment.
The oily discharge occurs because your body cannot digest the blocked fat - it must exit naturally. This process confirms orlistat is working as intended, blocking dietary fat absorption to support weight management.
Minimising Oily Stool with Proper Diet Management
Reducing oily stool is achievable through careful dietary management. Our pharmacy team advises spreading daily fat intake evenly across three main meals, limiting each meal to approximately 15g fat. When patients follow this guidance with orlistat 120mg capsules (available in 2-week to 12-week supplies), oily discharge becomes much more manageable.
Choosing lower-strength Alli 60mg may also reduce oily stool severity, though this provides less potent fat-blocking effects. Our prescribers can discuss whether starting with Alli before progressing to prescription-strength orlistat suits your needs.
Professional Support from EverydayMeds
As a GPhC-registered pharmacy, we provide comprehensive support beyond simply dispensing medication. Our MHRA-regulated supply chain ensures you receive genuine orlistat, Xenical, or Alli, whilst our clinical team offers practical advice on managing side effects like oily stool.
Generic orlistat 120mg offers identical fat-blocking effects to branded Xenical at significantly lower cost - our 4-week supply costs £29.69 (with EDM10) versus £38.69 for Xenical. Both cause the same oily stool mechanism, so many patients choose generic orlistat for better value whilst achieving identical clinical results.
When to Seek Additional Medical Advice
Whilst oily stool is an expected orlistat side effect, severe or persistent symptoms warrant medical review. Contact our pharmacy team or your healthcare provider if oily discharge becomes unmanageable despite following low-fat dietary guidance, or if you experience severe abdominal pain alongside oily stools.
Our Leicester-based pharmacy maintains full patient records and can liaise with your GP when necessary. This integrated approach ensures your orlistat treatment remains safe and effective throughout your weight management journey.
Order Orlistat from EverydayMeds Today
Understanding why orlistat causes oily stool prepares you for successful treatment. Order prescription orlistat 120mg from £15.20, Xenical from £19.35, or Alli 60mg from £26.09 - all with 10% off using code EDM10. Our UK-licensed prescribers conduct thorough clinical assessments, whilst our GPhC-registered pharmacy ensures discreet, next-day delivery across the UK. Start your weight management journey with professional support and competitive pricing from EverydayMeds.
