Product Information
Registration Status: ActiveSIN12434P
AVODART SOFT CAPSULE 0.5mg is approved to be sold in Singapore with effective from 2003-04-10. It is marketed by GLAXOSMITHKLINE PTE LTD, with the registration number of SIN12434P.
This product contains Dutasteride 0.5mg in the form of CAPSULE, LIQUID FILLED. It is approved for ORAL use.
This product is manufactured by Catalent France Beinheim S.A. in FRANCE, andGlaxoSmithKline Pharmaceuticals S.A. in POLAND.
It is a Prescription Only Medicine that can only be obtained from a doctor or a dentist, or a pharmacist with a prescription from a Singapore-registered doctor or dentist.
Product Reference
Important Note: For generic product, the SPC/PIL provided may not be brand specific.
{{/items}} {{^items}}Description
Dutasteride belongs to a class of drugs called 5-alpha-reductase inhibitors, which block the action of the 5-alpha-reductase enzymes that convert testosterone into dihydrotestosterone (DHT). Finasteride also belongs to this group, but while dutasteride inhibits both isoforms of 5-alpha reductase, finasteride inhibits only one. Even so, a clinical study done by GlaxoSmithKline, the EPICS trial, did not find dutasteride to be more effective than finasteride in treating BPH.
Indication
For the treatment of symptomatic benign prostatic hyperplasia (BPH) in men with an enlarged prostate gland to improve symptoms, and reduce the risk of acute urinary retention and the need for surgery.
Mechanism of Action
Dutasteride inhibits the conversion of testosterone to 5 alpha-dihydrotestosterone (DHT), which is the androgen primarily responsible for the initial development and subsequent enlargement of the prostate gland. Testosterone is converted to DHT by the enzyme 5 alpha-reductase, which exists as 2 isoforms, type 1 and type 2. Dutasteride is a competitive and specific inhibitor of both type 1 and type 2 5 alpha-reductase isoenzymes, with which it forms a stable enzyme complex. Dissociation from this complex has been evaluated under in vitro and in vivo conditions and is extremely slow. Dutasteride does not bind to the human androgen receptor.
Pharmacokinetics
- Absorption
- 60%
- Distribution
- * 300 to 500 L
- Metabolism
- Hepatic. Extensively metabolized by CYP3A4 and CYP3A5 to active metabolites.
- Elimination
Active Ingredient/Synonyms
(5alpha,17beta)-N-(2,5-Bis(trifluoromethyl)phenyl)-3-oxo-4-azaandrost-1-ene-17-carboxamide | alpha,alpha,alpha,Alpha',alpha',alpha'-hexafluoro-3-oxo-4-aza-5alpha-androst-1-ene-17beta-carboxy-2',5'-xylidide | Dutasteride |
Source of information: Drugbank (External Link). Last updated on: 3rd July 18. *Trade Name used in the content below may not be the same as the HSA-registered product.