Orlistat
- TRADE NAMES: Alli (GSK); Xenical (Roche)
- INDICATIONS: Obesity, weight reduction
- CLASS: Lipase inhibitor
- HALF-LIFE: 1–2 hours
CLINICALLY IMPORTANT, POTENTIALLY HAZARDOUS INTERACTIONS WITH:
Acarbose, Amiodarone, Antiepileptics, Coumarins, Cyclosporine, Ergocalciferol, Ethosuximide, Lacosamide, Levothyroxine, Oxcarbazepine, Paricalcitol, Phytonadione, Tiagabine, Vigabatrin, Vitamin A, Vitamin E, Warfarin
PREGNANCY CATEGORY: B
Contra-indicated in organ transplant recipients. Orlistat interferes with the medicines used to prevent transplant rejection.
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SKIN.
MUCOSAL.
CARDIOVASCULAR.
CENTRAL NERVOUS SYSTEM.
ENDOCRINE/METABOLIC.
GASTROINTESTINAL/HEPATIC.
GENITOURINARY.
HEMATOLOGIC.
NEUROMUSCULAR/SKELETAL.
OTIC.
RENAL.
RESPIRATORY.
OTHER.
Click on the DRUG REVIEW ARTICLE tab (above) to see a review of orlistat in the Taylor & Francis journal Expert Opinion on Drug Safety. (Note that non-subscribers to the journal will only be able to see an abstract of the article.)
Page last updated 09/25/2020
Symbol key
Incidence 
- <1%
- 1-5%
- 5-10%
- 10-15%
- 15-20%
- 20-30%
- >30%
Seriousness
- Hospitalization possible
- Life threatening
- Fatal
Warnings in other populations
- Breast feeding
- Geriatric
- Pediatric
