Investigational Drug Details

Drug ID: D260
Drug Name: Orlistat
Synonyms: Xenical; (-)-Tetrahydrolipstatin; Orlipastat; Tetrahydrolipstatin
Type: Chemical drug
DrugBank ID: DB01083
DrugBank Description: The global prevalence of obesity is increasing rapidly. Obesity-related complications lead to significant personal and economic burden by reducing quality of life and increasing the cost of healthcare. In some individuals, diet and exercise are insufficient to maintain weight loss, and pharmacological or surgical intervention is required. Orlistat is a lipase inhibitor used in the treatment of obesity that works by inhibiting fat-metabolizing enzymes. It was approved by the FDA for use in combination with a reduced-calorie diet in 1999. This drug is a generally well-tolerated and effective weight-loss aid and is now available in both over-the-counter and prescription preparations, depending on the dosage quantity.
PubChem ID: 3034010
CasNo: 96829-58-2
Repositioning for NAFLD: Yes
SMILES: C([C@@H](OC(=O)[C@H](CC(C)C)NC=O)CCCCCCCCCCC)[C@H]1[C@H](CCCCCC)C(=O)O1
Structure:
InChiKey: AHLBNYSZXLDEJQ-FWEHEUNISA-N
Molecular Weight: 495.745
DrugBank Targets: Pancreatic triacylglycerol lipase inhibitor; Gastric triacylglycerol lipase inhibitor; Fatty acid synthase inhibitor
DrugBank MoA: Orlistat is a potent and selective inhibitor of various lipase enzymes responsible for the metabolism of fat. It acts in the gastrointestinal (GI) tract via covalent binding to the serine residues located on the active site of both gastric and pancreatic lipase. When orlistat is taken with food containing fat, it partially inhibits the hydrolysis of triglycerides. This decreases absorption of monoaclglycerides and free fatty acids, contributing to weight maintenance and weight loss.
DrugBank Pharmacology: Orlistat helps with weight reduction and maintenance by inhibiting the absorption of dietary fats via the inhibition of lipase enzymes.
DrugBank Indication: Orlistat is indicated for obesity management including weight loss and weight maintenance when used in combination with calorie reduction in overweight and obese adults; this indication applies to both the prescription formulation of 120 mg and the over the counter formulation of 60 mg. Orlistat in the 120 mg prescription formulation is also indicated to reduce the risk for weight regain following weight loss.
Targets: FASN inhibitor
Therapeutic Category: Enhance lipid metabolism
Clinical Trial Progress: Phase 4 completed (NCT00160407: Orlistat did not enhance weight loss or improve liver enzymes, measures of insulin resistance, and histopathology. However, subjects who lost >or=5% of body weight over 9 months improved insulin resistance and steatosis, and those subjects who lost >or=9% also achieved improved hepatic histologic changes.)
Latest Progress: Under clinical trials

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