285 In the index

Orlistat ORLI

An FDA-approved weight-loss medication (Xenical, and over-the-counter as Alli) that blocks about a third of dietary fat from being absorbed. Human studies support modest weight loss when combined with a lower-fat diet, though oily stool and urgency are common and often limit how well people stick with it.

Also known as Xenical, Alli

Effects Lose fat

Routes Oral

Legal status Prescription drug

WADA Not listed

Molecular Structure of C₂₉H₅₃NO₅

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PubChem has no 3D conformer for this molecule, so this is the flat structure.

Chemistry

Formula: C29H53NO5
Molar mass: 495.7
CAS: 96829-58-2
PubChem CID: 3034010

Reported dosing

Approved label

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose 120 mg (prescription) or 60 mg (OTC)

Reported range 60-120 mg, up to 3 times daily with fat-containing meals

Route Oral

Frequency Up to 3 times daily, with meals

Duration Chronic/ongoing (as prescribed or per label)

FDA-approved as both a prescription (Xenical) and OTC (Alli) fat-absorption blocker; commonly causes GI side effects with high-fat meals.

Where this comes from FDA prescribing information

These figures are recorded for reference and are not a recommendation. Dosing is a decision for you and a clinician.