Common side effects
oily or fatty stools, urgent bowel movements, wind with oily spotting, stomach pain, diarrhoea, and reduced absorption of fat-soluble vitamins.
Weight loss prescription
Orlistat: what it is, who it is for, how it is taken, and what it may cost.
Orlistat contains orlistat. It is a lipase inhibitor. Orlistat is also sold under brand names such as Xenical; lower-dose versions may be available from a pharmacy after checks. This page gives customers the practical basics before speaking with a qualified clinician.
Customer snapshot
The short version.
- What it is: lipase inhibitor medicine containing orlistat.
- Who it may be for: adults with obesity, or BMI 28+ with weight-related risk factors, depending on clinician/pharmacist assessment.
- How it is usually taken: capsules taken up to three times daily with meals that contain fat.
- Typical private cost: UK online examples show generic orlistat 84-capsule packs around £45 and branded Xenical around £52 for a similar pack.
How it works
What customers should understand before starting.
Orlistat works in the gut by reducing how much fat is absorbed from food. A portion of dietary fat passes out in stools instead, which is why meal timing and fat intake strongly affect side effects. Results vary and treatment should be reviewed against tolerability and progress.
For orlistat capsules, customers need to understand meal timing, fat intake, missed-dose rules, possible digestive side effects, and whether vitamin timing or medicine interactions need pharmacist advice.
Safety and side effects
Common effects and caution points.
Important cautions
cholestasis, chronic kidney disease, malabsorption conditions, pregnancy/breastfeeding, warfarin/medicine interactions, and very high-fat meals increasing side effects should be discussed before treatment.
When to get help
Seek clinical advice for severe or persistent vomiting, dehydration, severe abdominal pain, allergic reaction symptoms, fainting, or anything that feels unsafe after starting.
Buying online
What a responsible online route should include.
A responsible provider should use a real consultation, explain eligibility, give dose instructions, provide pharmacy details, explain side effects, and make follow-up available. Avoid no-consultation sellers, unclear pharmacies, pressure-selling, imported/fake products, and guarantees of risk-free weight loss.