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Bioequivalence study of Clozapine tablets 100 mg in adult schizophrenic patients

A multi-center, open-label, balanced, randomized, two-treatment, two-period, two sequence, two-way crossover, steady-state bioequivalence study of Clozapine Tablets USP 100 mg of Micro Labs Limited, India with CLOZARIL® (Clozapine) 100 mg Tablets of HLS Therapeutics (USA), Inc., Rosemont, PA 19010 under fasting conditions in schizophrenic patients already receiving a stable daily dose of clozapine administered in multiples of 100 mg at 12-hour intervals. - NA

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2022/10/046504
Enrollment
48
Registered
2022-10-14
Start date
Unknown
Completion date
Unknown
Last updated
2023-08-21

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

Conditions

Health Condition 1: F20- Schizophrenia

Interventions

Intervention1: Clozapine Tablets USP 100 mg of Micro Labs Limited, India: In period-I (from day 1 to day 10), patients will receive either the Test product or the reference product every 12 hours for

Sponsors

Micro Labs Limited, India
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Patient fulfilling all the following criteria will be included in the study: 1.Patient and his/her legally acceptable representative (LAR): a. Willing to provide written informed consent for participation in the study; b. Having ability to comprehend the nature and purpose of the study; c. Willing to be available for the entire study period and comply with protocol requirements. 2. Disease population: a. Patients with documented clinical diagnosis of Schizophrenia as per Diagnostic and Statistical Manual of Mental Disorders (DSM-V Criteria); 3. Treatment condition: a. Patients with treatment-resistant Schizophrenia defined as failure to respond to two or more antipsychotic medications given in therapeutic dose for = six weeks); b. Currently stable on a regimen consisting of single or multiples of Clozapine tablets 100 mg twice daily (up to a maximum daily dose of 400 mg) for at least 3 months prior to randomization. 4. Patient should be otherwise healthy as determined by physical examination, medical history, and routine hematologic and biochemical tests; 5. Age of 18-65 years (both inclusive); 6. Body mass index (BMI) in the range of 18.50 – 29.99 kg/m2 (both inclusive); 7. HbA1c 8. Non-smoker and willing to abstain from chewing any tobacco containing product during housing period in clinical facility; 9. Willing to abstain from alcohol or alcoholic products, xanthine or its derivative containing food or beverages (e.g. chocolates, tea, coffee or cola drinks), and grapefruit or its juice during housing period in clinical facility; 10. Adequate hematological reserves, particularly: a. A total white blood cells (WBC) count = 3500 /µL; b. Absolute neutrophil count (ANC) =2000/µL; 11. Clinically non-significant serum electrolytes (sodium, potassium, magnesium and chloride); 12. With normal or clinically non-significant laboratory values as determined by hematological, biochemistry tests and urine analysis; 13. With a normal or clinically non-significant 12-lead ECG; 14. In case of female patients: a. Negative urine pregnancy test during screening and, negative serum ß-hCG test at baseline visit and at check-in for housing during each study period; b. Female patient with child bearing potential or those within their first two years of onset of menopausal syndrome must either abstain from sexual intercourse, or using acceptable methods of birth control during the study [Acceptable birth control methods include barrier methods such as diaphragm/condom with spermicide or who are surgically sterile (bilateral tubal ligation, bilateral oophorectomy or hysterectomy has been performed)].

Exclusion criteria

Exclusion criteria: 1. Patient fulfilling any one of the following criteria will be excluded from the study: A. Institutionalized patients; B. A history of allergic or hypersensitive reactions to 2. Clozapine or other chemically related psychotropic drugs or to any of the excipients of formulation which in the opinion of investigator, would compromise the safety of the patient or the study; 3. Concurrent primary psychiatric or neurological diagnosis, including organic mental disorder, severe tardive dyskinesia, or idiopathic Parkinson?s disease; 4. Acute psychotic exacerbations within 3 months of start of study; 5. Elder patients with dementia-related psychosis; 6. History of suicidal thinking, imminent risk of suicide, or a danger to self or others as judged by the investigator; 7. A history of granulocytopenia or myeloproliferative disorders (drug induced or idiopathic); 8. Concurrent use of other drugs known to suppress bone marrow function; 9. History of syncope or orthostatic hypotension (i.e., a drop in systolic blood pressure of 20 mm Hg or more and/or a drop in diastolic blood pressure of 10 mm Hg or more on standing); 10. Concurrent use of antihypertensive medication or any medication that might predispose to orthostatic hypotension; 11. A medical or surgical condition that might interfere with the absorption, metabolism, or excretion of Clozapine; 12. A history of epilepsy or risk for seizures; 13. Significant history or current evidence of malignancy or chronic -infectious, cardiovascular, renal, hepatic, ophthalmic, pulmonary, neurological, metabolic (endocrine), hematological, gastrointestinal, immunological or psychiatric diseases, or organ dysfunction, which in the opinion of an investigator, would compromise the safety of the patient or the study; 14. Patients with a current diagnosis or prior history of constipation; 15 .Expected changes in concomitant medications (including inhibitors or inducers of CYP3A4 or CYP1A2) during the study periods;Expected incompliance with outpatient medications; 16. A history of alcohol or drug dependence by DSM-V criteria during the 6-month period immediately prior to study entry; 17. Positive urine alcohol or urine drug of abuse tests during baseline visits, or at each check-in for housing during each study period; 18. Positive test for Human Immunovirus (HIV) type I/II antibodies or Hepatitis B surface antigen (HBsAg) or Hepatitis C virus (HCV) antibodies; 19. In case of female patients: a. Planning to become pregnant; b. Lactating or nursing patients; c. Using hormonal contraceptive (either oral/implants); 20Participated in any clinical investigation requiring repeated blood sampling or have donated blood in past 90 days prior to first dosing; 21. Any major illness or hospitalization within 90 days prior to first dosing of the study; a. History of Phenylketonuria; b. History of Glaucoma; c. History of difficulty in accessibility of veins in arms.

Design outcomes

Primary

MeasureTime frame
To assess bioequivalence of the test product in comparison with the reference product.Timepoint: Pre-dose (within 5 minutes of scheduled morning dosing time), and at 0.25, 0.50, 1.00, 1.50, 2.00, 2.50, 3.00, 3.50, 4.00, 5.00, 6.00, 8.00, 10.00 and 12.00 hours post-morning dose.

Secondary

MeasureTime frame
To assess safety and tolerability profile of test and reference productsTimepoint: Post-study safety evaluations will be performed at the time of period-II checkout (on Day 21) but before taking any medication as per the standard of care.

Countries

India

Contacts

Public ContactDinesh Kumar Garg

Raptim Research Private Ltd.

chirag.shah@raptimresearch.com912227781889

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026