Official Title: “Single-Dose Fasting In Vivo Bioequivalence Study of Divalproex Sodium Extended-Release Tablets (500 mg; Mylan) to Depakote ER® Tablets (500 mg; Abbott) in Healthy, Adult Male Volunteers”

The objective of this study was to investigate the bioequivalence of Mylan's divalproex sodium 500 mg extended-release tablets to Abbott's Depakote ER® 500 mg tablets following a single, oral 500 mg (1 x 500 mg) dose administered under fasting conditions.

Study Type: Interventional

Study Design: Other, Randomized, Open Label, Crossover Assignment, Bio-equivalence Study

Study Primary Completion Date: December 2004

Intervention(s) in this Clinical Trial

• Drug: Divalproex Sodium Extended-Release Tablets 500 mg
  • 500mg, single dose fasting
• Drug: Depakote ER® Tablets 500 mg
  • 500mg, single dose fasting

Arms, Groups and Cohorts in this Clinical Trial

• Experimental: 1
  • Divalproex Sodium Extended-Release Tablets 500 mg
• Active Comparator: 2
  • Depakote ER® Tablets 500 mg

Primary Measures

• Bioequivalence
  • Time Frame: within 30 days
    Safety Issue?: No

Inclusion Criteria:

• 1. Age: 18 years and older.
• 2. Sex: Male.
• 3. Weight: At least 60 kg (132 lbs) and within 15% of Ideal Body Weight (IBW), as referenced by the Table of "Desirable Weights of Adults" Metropolitan Life Insurance
• Company, 1999 (See Part II ADMINISTRATIVE ASPECTS OF BIOEQUIVALENCE PROTOCOLS).
• 4. All subjects should be judged normal and healthy during a pre-study medical evaluation (physical examination, including vital signs, laboratory evaluation, 12-lead ECG, hepatitis B and hepatitis C tests, HIV test, and urine drug screen including amphetamine, barbiturates, benzodiazepine, cannabinoid, cocaine, opiates, phencyclidine, and methadone) performed within 14 days of the initial dose of study medication.
• 5. During the course of the study, from study screen until study exit, all males must use a spermicide-containing barrier method of contraception in addition to their current contraceptive device (if any). This requirement should be documented in the informed consent form.

Exclusion Criteria:

• 1. Institutionalized subjects will not be used.
• 2. Social Habits:
• 1. Use of any tobacco products within 1 year of the start of the study.
• 2. Ingestion of any alcoholic, caffeine- or xanthine-containing food or beverage within 48 hours prior to the initial dose of study medication.
• 3. Ingestion of any vitamins or herbal products within 7 days prior to the initial dose of the study medication.
• 4. Any recent, significant change in dietary or exercise habits.
• 5. A positive test for any drug included in the urine drug screen.
• 6. History of drug and/or alcohol abuse.
• 3. Medications:
• 1. Use of any prescription or over-the-counter (OTC) medications within 14 days prior to the initial dose of study medication.
• 2. Use of any medication known to alter hepatic enzyme activity within 28 days prior to the initial dose of study medication.
• 4. Diseases:
• 1. History of any significant cardiovascular, hepatic, renal, pulmonary, hematologic, gastrointestinal, endocrine, immunologic, dermatologic, neurologic disease.
• 2. Acute illness at the time of either the pre-study medical evaluation or dosing.
• 3. A positive HIV, hepatitis B, or hepatitis C test.
• 5. Abnormal and clinically significant laboratory test results:
• 1. Clinically significant deviation from the Guide to Clinically Relevant
• Abnormalities (See Part II ADMINISTRATIVE ASPECTS OF BIOEQUIVALENCE PROTOCOLS).
• 2. Abnormal and clinically relevant ECG tracing.
• 6. Donation or loss of a significant volume of blood or plasma (> 450 mL) within 28 days prior to the initial dose of study medication.
• 7. Subjects who have received an investigational drug within 30 days prior to the initial dose of study medication.
• 8. Allergy or hypersensitivity to valproic acid or any other related products.
• 9. History of difficulties in swallowing, or any gastrointestinal disease which could affect the drug absorption.
• 10. Consumption of grapefruit or grapefruit containing products within 7 days of drug administration.

Gender Eligibility for this Clinical Trial: Male

Minimum Age for this Clinical Trial: 18 Years

Maximum Age for this Clinical Trial: N/A

Are Healthy Volunteers Accepted for this Clinical Trial?: Accepts Healthy Volunteers

Lead Sponsor: Mylan Pharmaceuticals

Overall Clinical Trial Officials and Contacts

Daniel Freeland, D.O. Principal Investigator Cedra Clinical Research, LLC.  

Information obtained from ClinicalTrials.gov on August 29, 2008

Link to the current ClinicalTrials.gov record. http://clinicaltrials.gov/show/NCT00647712

Study ID Number: DIVA-0380

ClinicalTrials.gov Identifier: NCT00647712

Health Authority: United States: Institutional Review Board

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