How orlistat works, the difference between 60 mg (Alli) and 120 mg (Xenical), what to expect, and why we don’t sell clenbuterol or other “fat burners”.
How orlistat works
Orlistat blocks some of the fat you eat from being absorbed – roughly 25 to 30%, depending on the dose – so it passes out of the body instead. It works alongside a reduced-calorie, low-fat diet and more activity; it isn't a substitute for them.
Alli vs Xenical
| Orlistat 60 mg (Alli) | Orlistat 120 mg (Xenical) | |
|---|---|---|
| Prescription | Not needed (adults 18+) | Required |
| For | Overweight adults | Adults with obesity, or overweight with a risk factor such as diabetes or high blood pressure |
| Dose | 1 capsule with each fat-containing meal, up to 3 a day | 1 capsule with each fat-containing meal, up to 3 a day |
Zenical is an orlistat brand sold outside the US and isn't FDA-approved.
What to expect
- Keep fat to about 15 g per meal. High-fat meals cause the main side effects: oily spotting, gas with discharge and urgent bowel movements.
- Take a multivitamin at bedtime, because orlistat reduces the absorption of vitamins A, D, E and K.
- Ask a doctor first if you take warfarin, thyroid medicine, diabetes medicine or cyclosporine.
Weight loss products we don't sell
- Clenbuterol isn't approved for human use in the US and can cause dangerous heart rhythms.
- Phentermine is a controlled substance (Schedule IV) with strict prescribing rules.
- "Fat burners" sold online have been found to contain hidden prescription drugs.
We sell orlistat 60 mg and, with a prescription verified by our pharmacist, orlistat 120 mg.