8 Best Xenical Clinics in Singapore (August 2026)

Before the list, here is how I weighed these clinics. Xenical Singapore is a health decision, not a beauty purchase, so my criteria are about safety, honesty, and aftercare rather than before-and-after marketing.

• Doctor-led and HSA-compliant. The 120mg version is a prescription-only medicine under the Health Sciences Authority, so a proper consultation and prescription are non-negotiable. Be wary of anywhere offering it without one.
• Honest about the side effects. A clinic I trust is upfront that orlistat causes oily, loose stools when you eat fatty food, and frames that as the low-fat diet doing the work, not a flaw to hide.
• Clear dietary and vitamin guidance. Because orlistat can reduce absorption of fat-soluble vitamins, the doctor should give practical low-fat eating advice and usually recommend a fat-soluble vitamin or multivitamin taken at a separate time of day.
• Honest eligibility assessment. A good clinic checks whether medication is actually appropriate, usually against the lower Asian BMI thresholds the Health Promotion Board uses, and is willing to say no if it is not.
• Treats it as one tool, not a cure. Orlistat works best alongside diet and lifestyle change. I rate clinics that present it as one tool among several rather than a guaranteed result.

Because the 120mg version is prescription-only, clinics cannot publicly advertise specific prices, so the figures below are indicative market ranges for 2026, not quotes. Your actual cost depends on the clinic, the consultation, and how much follow-up is included.

These prices are not advertised, and a consultation is required for the 120mg version, so treat the table as a guide for budgeting rather than a fixed menu. Ask each clinic for an all-in figure that includes the consult and any review so you are comparing like with like.

Xenical is orlistat, and it works as a fat (lipase) blocker. After a meal, enzymes called lipases break dietary fat down so your body can absorb it. Orlistat blocks some of those enzymes in your gut, so roughly a quarter to a third of the fat in that meal passes through undigested rather than being absorbed as calories.

What makes it different from most other weight loss medicine is where it acts. Appetite suppressants and GLP-1 injections work on the brain or on hormones to change how hungry you feel. Orlistat does none of that. It works entirely in the gut, with no stimulant effect, which is why it appeals to people who cannot take or do not want a stimulant or an injection. The flip side is that it only helps with the fat you eat, so it rewards a lower-fat diet.

The most talked-about side effects of orlistat are gastrointestinal, and they follow directly from how it works. Because it stops some fat being absorbed, that fat leaves the body instead, which can mean oily or loose stools, more frequent or urgent bowel movements, and oily spotting, especially after a high-fat meal. In practice this acts as a built-in nudge towards eating less fat, because the more fat you eat, the more pronounced these effects are.

Because orlistat reduces the absorption of fat along with some fat-soluble vitamins (A, D, E, and K), doctors usually advise taking a multivitamin, ideally at a different time of day such as at bedtime, so it is absorbed properly. These are general points, not medical advice, so discuss the specifics and any other medication you take with your doctor.

For the 120mg version, yes. Xenical (orlistat 120mg) is a prescription-only medicine regulated by the Health Sciences Authority (HSA), so you need to see a doctor for an assessment and a prescription. No legitimate clinic can sell it to you without that consultation, and none can publicly advertise a specific price for it.

A lower-strength orlistat can be pharmacist-supplied without a doctor's prescription, which is why you may have seen orlistat discussed as an over-the-counter option elsewhere. The two are not the same product, and if your doctor thinks the stronger 120mg dose is right for you, that route runs through a clinic. When in doubt, a quick consultation will clarify which version suits you.

Eligibility is a medical decision a doctor makes with you, but it generally follows body mass index (BMI) thresholds, and Singapore uses lower cut-offs for Asian populations. The Health Promotion Board treats a BMI of 23 and above as higher risk and 27.5 and above as high risk, lower than the global figures of 25 and 30.

In practice, orlistat is typically considered for people who are overweight or obese by these thresholds, often around a BMI of 27 to 30 and above, particularly if you also have a weight-related condition. A responsible clinic will assess your BMI, your health history, and what you eat, and will tell you honestly if orlistat is not the right path. That willingness to say no is one of the clearest signs of a clinic worth trusting.

Not sure this is the right medication for you? Each option works differently and suits a different person, so it is worth comparing. Here are my guides to the other weight loss medications in Singapore, plus the overview that ties them together:

• Overview: the best weight loss clinics in Singapore, across every medication and approach.
• Wegovy (semaglutide, a weekly injection dosed for weight): best Wegovy clinics.
• Ozempic (semaglutide, a diabetes drug used off-label for weight): best Ozempic clinics.
• Mounjaro (tirzepatide, dual-action with the largest average results): best Mounjaro clinics.
• Saxenda (liraglutide, a daily injection): best Saxenda clinics.
• Rybelsus (oral semaglutide, a daily tablet for the needle-averse): best Rybelsus clinics.
• Duromine (phentermine, an appetite suppressant used short-term): best Duromine clinics.