This study was to compare the single-dose oral bioequivalence of Pantoprazole sodium 40 mg delayed release tablets (containing 45.1 mg of Pantoprazole sodium sesquihydrate equivalent to 40 mg of Pantoprazole) of OHM Laboratories Inc. USA (a subsidiary of Ranbaxy Pharmaceuticals Inc. USA) with PROTONIX® 40 mg delayed release tablets (containing 45.1 mg of Pantoprazole sodium sesquihydrate equivalent to 40 mg of Pantoprazole) of Wyeth Pharmaceuticals Inc., USA in healthy, adult, human, male subjects under fasting conditions.condition.

The study was an open-label, balanced, randomized, two-treatment, two-period, two-sequence, single-dose, crossover, bioequivalence under fasting condition.

A washout period of 04 days was enforced between the administrations of study drugs in each period.. At study check-in, the subjects reported to the clinical site at least 36 hours prior to Day 1 dosing and were required to stay for 24 hours after Day 1 dosing. Blood sample collections were obtained within 90 minutes prior to dosing (0 hour) and after dose administration at periodic interval up to 24.00 hour in each period. A total number of blood draws during the study were fifty-four (54) and the total volume of blood drawn did not exceed 274 mL.

Following an overnight fast of at least 10 hour, a single oral dose of Pantoprazole sodium delayed release tablets 40 mg of either test or reference drug product was administered during each period of the study, along with 240 mL of drinking water at ambient temperature under low light condition and under supervision of trained study personnel. Both test and reference drug products were administered to all the study subjects one in each period

Inclusion Criteria:

Volunteers who met the following criteria were included in the study

• Were in the age range of 18-45 years.
• Were neither overweight nor underweight for his height as per the Life Insurance Corporation of India height/weight chart for non-medical cases.
• Had voluntarily given written informed consent to participate in this study.
• Were of normal health as determined by medical history and physical examination of the subjects performed within 21 days prior to the commencement of the study.

There were no deviations in this regard.

Exclusion Criteria:

• History of known hypersensitivity to Pantoprazole, related drugs and/or any other drugs.
• Use of alcohol within 48 hours prior to admission.
• Use of grapefruit juice and or grape fruit supplements within 48 hours prior to admission.
• Any evidence of organ dysfunction or any clinically significant deviation from the normal, in physical or clinical determinations.
• Subjects with investigations (laboratory test parameters) which was/were outside acceptable limits and was judged clinically significant by investigator.
• Subjects with clinically abnormal ECG or Chest X-ray.
• Presence of disease markers of HIV 1 or 2, Hepatitis B or C viruses or syphilis infection.
• Subjects with clinically abnormal chemical and microscopic examination of urine defined as presence of RBC, WBC (>4 /HPF), glucose (Positive) or Protein (Positive).
• History of serious medical illness including but not limited to gastrointestinal, hepatic, renal, cardiovascular, pulmonary, neurological or hematological disease, diabetes, glaucoma, any serious potentially life threatening illness or any psychiatric illness (which might impair the ability to provide written informed consent form).
• Regular smokers who smoked more than 10 cigarettes daily or had difficulty abstaining from smoking for the duration of each study period.
• History of drug dependence or excessive alcohol intake on a habitual basis of more than 2 units of alcoholic beverages per day (1 unit equivalent to half pint of beer or 1 glass of wine or 1 measure of spirit) or had difficulty in abstaining for the duration of each study period.
• Use of any regular medication (OTC or prescription) or any drug metabolizing enzyme modifying medications within 30 days prior to Day 1 of this study.
• Participation in any clinical trial within 12 weeks preceding Day 1 of this study (except for the subjects who dropout/withdrawn from the previous study prior to period I dosing).
• Subjects who, through completion of this study, would have donated and /or lost more than 350 ml of blood in the past 3 months other than study participation.
• Subjects with problem(s) in complying with the study protocol.

There were no deviations in this regard..