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Open Label, Randomized, Two-way Crossover, Two-sequence, Two-period, Two-treatment Bioequivalence Study of 5 mg Finasteride Film-coated Tablet Preparations in Healthy Thai Male Volunteers

Open Label, Randomized, Two-way Crossover, Two-sequence, Two-period, Two-treatment Bioequivalence Study of 5 mg Finasteride Film-coated Tablet Preparations in Healthy Thai Male Volunteers

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
TCTR
Registry ID
TCTR20170121002
Enrollment
Unknown
Registered
2017-01-21
Start date
2017-07-24
Completion date
Unknown
Last updated
2026-03-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bioequivalence study&#44

Interventions

PROSCAR®&#44
each tablet contains finasteride 5 mg (Reg. No. 1C 56/55 (N))&#44
manufactured by Alkermes Pharma Ireland Ltd.&#44
Co. Westmeath&#44
Ireland and imported by MSD (Thailand) Ltd.&#44
Bangkok&#44
Thailand,Generic finasteride 5 mg film&#45
coated tablet&#44
FINASCAR&#44
each tablet contains finasteride 5 mg.
Active Comparator Drug,Active Comparator Drug
Finasteride 5 mg film&#45
coated tablet,Finasteride 5 mg film&#45

Sponsors

International Bio Service Co., Ltd.
Lead Sponsor

Eligibility

Sex/Gender
Male
Age
18 Years to 55 Years

Inclusion criteria

Inclusion criteria: 1 Healthy Thai male subjects between the ages of 18 to 55 years. 2 Body mass index between 18.0 to 25.0 kg/m2. 3 Normal laboratory values, including vital signs and physical examination, for all parameters in clinical laboratory tests at screening. Any abnormalities from the normal or reference range will be carefully considered clinically relevant by the physician as individual cases, documented in study files prior to enrolling the subject in this study. 4 Male subjects who are willing or able to use effective contraceptive e.g. condom or abstinence after admission in Period 1 until 7 days after the end of study. 5 Have voluntarily given written informed consent (signed and dated) by the subject prior to participating in this study.

Exclusion criteria

Exclusion criteria: 1 History of allergic reaction or hypersensitivity to finasteride or related structure (e.g. testosterone) or any of the components of the product 2 History or evidence of clinically significant renal, hepatic, gastrointestinal, hematological, endocrine (e.g. thyroid), pulmonary, cardiovascular, psychiatric, neurologic, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at time of dosing) or any significant ongoing chronic medical illness 3 History or evidence of reproductive system disorders e.g. prostate cancer, erectile dysfunction or ejaculation disorders 4 History or evidence of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption 5 History of problems with swallowing tablet 6 History of sensitivity to heparin or heparin-induced thrombocytopenia 7 Any condition possibly affecting drug absorption e.g. gastrectomy, enterectomy, gastritis or duodenal or gastric ulceration other than appendectomy 8 History of preceding diarrhea within 24 hrs prior to admission in each period 9 History or evidence of drug addict or investigation with urine sample shows a positive test for drug of abuse (morphine, marijuana or methamphetamine) 10 12-lead ECG demonstrating QTc >450 msec, a QRS interval >120 msec or with an abnormality considered clinically significant at screening. If QTc exceeds 450 msec, or QRS exceeds 120 msec, the ECG should be repeated two more times and the average of the three QTc or QRS values should be used to determine the subject’s eligibility. 11 Investigation with blood sample shows positive test for HBsAg. 12 Abnormal liver function, ≥ 1.5 times of upper normal limit of reference range for ALT, AST or bilirubin levels at screening laboratory test 13 History or evidence of habitual use of tobacco or nicotine containing products and cannot abstain for at least 7 days prior to admission and continued until last sample collection in each study period. 14 History or evidence of alcoholism, regular alcohol consumption or alcohol-containing products and cannot abstain for at least 7 days prior to admission and continued until last sample collection in each study period 15 History or evidence of habitual consume of tea, coffee, xanthine or caffeine containing products and cannot abstain for at least 7 days prior to admission and continued until last sample collection in each study period 16 Consumption or drinking of grapefruit juice or orange or its supplement/containing products and cannot abstain for at least 7 days prior to admission and continued until last sample collection in each study period 17 Use of prescription or nonprescription drugs (e.g. paracetamol, erythromycin, ibuprofen, ketoconazole), herbal medications or supplements (e.g. St. John’s wort), vitamins or mineral (e.g. iron) or dietary supplements within 14 days prior to admission in Period 1 or during enrollment 18 Participated in other clinical trial within 90 days or ongoing long-term clinical trial prior to admission in Period 1 (except for the subjects who dropped out/withdrawn from the previous study prior to Period 1 dosing) or during enrollment 19 Blood donation or blood loss ≥1 unit (1 unit is equal to 350-450 mL of blood) within 90 days prior to admission in Period 1 or during enrollment

Design outcomes

Primary

MeasureTime frame
Finasteride plasma concentrations 0,0.25,0.5,1,1.5,2,2.5,3,3.5,4,4.5,5,6,8,10,12,24,36 hrs post-dose Cmax, AUC0-tlast and AUC0-∞

Secondary

MeasureTime frame
Finasteride plasma concentrations 0,0.25,0.5,1,1.5,2,2.5,3,3.5,4,4.5,5,6,8,10,12,24,36 hrs post-dose Tmax, t1/2, λz, AUC0-tlast/AUC0-∞, AUC%extrapolate, MRT

Countries

Thailand

Contacts

Public ContactUthai Suvanakoot

International Bio Service Co. Ltd.

uthai.s@chula.ac.th024415211

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Apr 4, 2026