The purpose of this study is compare the relative bioavailability of 750 mg Metformin
Hydrochloride Extended Release Tablets by Purepac Pharmaceutical Co with that of 750 mg
GLUCOPHAGE® XR Tablets by Bristol-Myers Squibb Company following a single oral dose (1 x 750
mg) in healthy adult volunteers under fasting conditions
Minimum age: 18 Years.
Maximum age: N/A.
Gender(s): Both.
Inclusion Criteria:
1. Screening Demographics: All volunteers selected for this study will be healthy men
and women 18 years of age or older at the time of dosing. The weight range will not
exceed ± 20% for height and body frame as per Desirable Weights for Adults - 1983
Metropolitan Height and Weight Table.
2. Screening Procedures: Each volunteer will complete the screening process within 28
days prior to Period I dosing. Consent documents for both the screening evaluation
and HIV antibody determination will be reviewed, discussed, and signed by each
potential participant before full implementation of screening procedures.
Screening will include general observations, physical examination, demographics,
medical and medication history, an electrocardiogram, sitting blood pressure and
heart rate, respiratory rate and temperature. - The physical examination will include,
but may not be limited to, an evaluation of the cardiovascular, gastrointestinal,
respiratory and central nervous systems.
The screening clinical laboratory procedures will include:
- HEMATOLOGY: hematocrit, hemoglobin, WBC count with differential; RBC count,
platelet count;
- CLINICAL CHEMISTRY: serum creatinine, BUN, glucose, AST(GOT), ALT(GPT), albumin,
total bilirubin, total protein, and alkaline phosphatase;
- HIV antibody and hepatitis B surface antigen screens;
- URINALYSIS: by dipstick, microscopic examination if dipstick positive; and.
- URINE DRUG SCREEN: ethyl alcohol, amphetamines, barbiturates, benzodiazepines,
cannabinoids, cocaine metabolites, opiates and phencyclidine.
- SERUM PREGNANCY SCREEN (female volunteers only)
3. If female and:
- of childbearing potential, is practicing an acceptable barrier method of birth
control for the duration of the study as judged by the investigator(s), such as
condoms, sponge, foams, jellies, diaphragm; intrauterine device (IUD), or
abstinence; or
- is postmenopausal for at least I year; or
- is surgically sterile (bilateral tubal ligation, bilateral oophorectomy, or
hysterectomy).
Exclusion Criteria:
1. Volunteers with a recent history of drug or alcohol addiction or abuse.
2. Volunteers with the presence of a clinically significant disorder involving the
cardiovascular, respiratory, renal, gastrointestinal, immunologic, hematologic,
endocrine, or neurologic system(s) or psychiatric disease (as determined by the
medical investigator).
3. Volunteers whose clinical laboratory test values are outside the accepted reference
range and when confirmed on re-examination are deemed to be clinically significant.
4. Volunteers demonstrating a positive hepatitis B surface antigen screen or a reactive
HIV antibody screen.
5. Volunteers demonstrating a positive drug abuse screen when screened for this study.
6. Female volunteers demonstrating a positive pregnancy screen.
7. Female volunteers who are currently breastfeeding.
8. Volunteers with a history of allergic response(s) to metformin or related drugs.
9. Volunteers with a history of clinically significant allergies including drug
allergies.
10. Volunteers with a clinically significant illness during the 4 weeks prior to Period I
dosing (as determined by the medical investigator).
11. Volunteers who currently use tobacco products.
12. Volunteers who have taken any drug known to induce or inhibit hepatic• drug
metabolism in the 28 days prior to Period I dosing.
13. Volunteers who report donating greater than 150 mL of blood within 28 days prior to
Period I dosing. All subjects will be advised not to donate blood for four weeks
after completing the study.
14. Volunteers who have donated plasma (e. g. plasmapheresis) within 14 days prior to
Period I dosing. All subjects will be advised not to donate plasma for four weeks
after completing the study.
15. Volunteers who report receiving any investigational drug within 28 days prior to
Period I dosing.
16. Volunteers who report taking any systemic prescription medication in the 14 days
prior to Period I dosing.