Product Information

Registration Status: Active

APO-ANASTROZOLE FILM-COATED TABLET 1MG is approved to be sold in Singapore with effective from 2018-09-11. It is marketed by PHARMAFORTE SINGAPORE PTE LTD, with the registration number of SIN15536P.

This product contains Anastrozole 1 mg in the form of TABLET, FILM COATED. It is approved for ORAL use.

This product is manufactured by Apotex Inc. (S.P. Facility) in CANADA, andMillmount Healthcare Ltd. (Primary and Secondary Packager) in IRELAND.

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.



Anastrozole is a drug indicated in the treatment of breast cancer in post-menopausal women. It is used both in adjuvant therapy (i.e. following surgery) and in metastatic breast cancer. It decreases the amount of estrogens that the body makes. Anastrozole belongs in the class of drugs known as aromatase inhibitors. It inhibits the enzyme aromatase, which is responsible for converting androgens (produced by women in the adrenal glands) to estrogens.


For adjuvant treatment of hormone receptor positive breast cancer , as well as hormonal treatment of advanced breast cancer in post-menopausal women. Has also been used to treat pubertal gynecomastia and McCune-Albright syndrome; however, manufacturer states that efficacy for these indications have not been established.

Mechanism of Action

Anastrozole selectively inhibits aromatase. The principal source of circulating estrogen (primarily estradiol) is conversion of adrenally-generated androstenedione to estrone by aromatase in peripheral tissues. Therefore, aromatase inhibition leads to a decrease in serum and tumor concentration of estrogen, leading to a decreased tumor mass or delayed progression of tumor growth in some women. Anastrozole has no detectable effect on synthesis of adrenal corticosteroids, aldosterone, and thyroid hormone.


Rapidly absorbed into the systemic cirulation following oral administration. Peak plasma concentrations are usually attained within 2 hours under fasting conditions, with steady-state plasma concentrations attained in approximately 7 days.
Hepatic. Metabolized mainly by N-dealkylation, hydroxylation, and glucuronidation to inactive metabolites. Primary metabolite is an inactive triazole.


In rats, lethality is greater than 100 mg/kg.

Active Ingredient/Synonyms

alpha,alpha,Alpha',alpha'-tetramethyl-5-(1H-1,2,4-triazol-1-ylmethyl)-m-benzenediacetonitrile | Anastrozol | Anastrozole |

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.


  1. Health Science Authority of Singapore - Reclassified POM
  2. Drugbank