The objective of this study is to evaluate the comparative bioavailability between Anastrozole 1 mg Tablets (Teva Pharmaceuticals USA) and Arimidex® 1 mg Tablets (AstraZeneca Pharmaceuticals LP, USA), after a single-dose in healthy subjects under fasting conditions.

Criteria for Evaluation: FDA Bioequivalence Criteria

Statistical Methods: FDA Bioequivalence Statistical Methods

Inclusion Criteria:

• Healthy, non-smoking, post-menopausal or surgically sterile female subjects 18 years or age or older.

• Body mass index (BMI) between 19 and 30, inclusive.

• Indicate non-child bearing status by one of the following criteria:

  • Indication of successful hysterectomy.
  • No spontaneous menses for at least 1 year, must have luteinizing hormone (LH) and follicle stimulating hormone (FSH) levels within postmenopausal range.
  • Indication of successful bilateral oophorectomy.

• Negative for:

  • HIV.
  • Hepatitis B surface antigen and Hepatitis C antibody.
  • Urine drugs of abuse test (marijuana, amphetamines, barbiturates, cocaine, opiates, benzodiazepines, and methadone).
  • Urine cotinine test.
  • Serum pregnancy test.

• No significant diseases or clinically significant findings in a physical examination.

• No clinically significant abnormal laboratory values.

• No clinically significant findings in the 12-lead electrocardiogram (ECG).

• No clinically significant findings from the vital signs measurement.

• Be informed of the nature of the study and given written consent prior to receiving any study procedure.

• Participants in this study will be unable to have children (i.e. post-menopausal, hysterectomy).

Exclusion Criteria:

• Known history or presence of any clinically significant medical condition.

• Known or suspected carcinoma.

• Known history of:

  • Hypersensitivity or idiosyncratic reaction to anastrozole and/or any other drug substances with similar activity.
  • Alcoholism within the last 12 months.
  • Drug dependence and/or substance abuse.
  • Use of tobacco or nicotine-containing products within the last 6 months.

• Taken any drug known to induce or inhibit hepatic drug metabolism in the 30 days prior to dosing.

• Taken any hormone replacement therapy (HRT) for 4 weeks prior to dosing.

• On a special diet within 4 weeks prior to drug administration (e.g. liquid, protein, raw food diet).

• Participated in another clinical trial or received an investigational product within 30 days prior to drug administration.

• Donated up to 250 mL of blood within the previous 30 days OR donated from 251 to 500 mL of blood in the previous 45 days OR donated more than 500 mL of blood in the previous 56 days.

• Requirement of any non-topical medication (prescription and/or over-the-counter) on a routine basis.

• Difficulty fasting or consuming the standard meals.

• Do not tolerate venipuncture.

• Unable to read or sign the informed consent form.

Adverse event data was collected over the course of the study, which was approximately 6 weeks in duration.

Volunteers were monitored throughout the study for any adverse experiences. AEs were collected through both solicited and unsolicited methods. The volunteers were encouraged to report signs, symptoms, and any changes in health to the clinic staff.