Study subjects were screened and enrolled for the study. Subjects were housed in the clinical facility from not less than 12 hours pre-dose till at least 30 hours post-dose in each period. After maintaining at least 10 hours of overnight fast Test or Reference product was administered orally (as per the randomization schedule) to each subject with about 240 mL of water at ambient temperature in each period by trained study personnel.

The pre-dose (0.00 hours) blood sample was collected before dosing and post-dose samples were collected at 2.00, 3.00, 4.00, 5.00, 5.50, 6.00, 6.50, 7.00, 7.50, 8.00, 8.50, 9.00, 9.50, 10.00, 10.50, 11.00, 12.00, 14.00, 16.00, 20.00, 24.00 and 30.00 hours in each study period with a washout period of 7 days between the dosing of two periods. Subjects were continuously monitored for well being i.e., blood pressure, radial pulse and oral temperature before check-in, prior to drug administration and at regular intervals post dose in each period. The concentration of Ropinirole in plasma samples obtained from study subjects was determined using validated LC-MS/MS method. Pharmacokinetic and statistical analyses were performed on obtained drug concentration data, using appropriate software.

Inclusion Criteria:

i. Availability of volunteer for the entire study period and willingness to adhere to protocol requirements as evidenced by the written informed consent form (ICF) duly signed by the volunteer.

ii. Healthy human male subjects between 18-45 years Weighing at least 50 kg and with a body mass index (BMI) of 18 kg/m2 and less than 25 kg/m2 (according to the formula of BMI = weight (kg)/[height (m)]2).

iii. Subjects who have no evidence of underlying disease during screening medical history and whose physical examination is performed within 14 days prior to commencement of the study.

iv. Subjects whose screening laboratory values are within normal limits or considered by the physician/Principal Investigator to be of no clinical significance.

v. Light, non or ex-smokers. Light smokers are defined as someone smoking 10 cigarettes or less per day, and ex-smokers are defined as someone who completely stopped smoking for at least 3 months.

Exclusion Criteria:

History or presence of significant:

I. History of hypersensitivity or idiosyncratic reactions to Ropinirole or any related products.

II. Cardiovascular, pulmonary, hepatic, renal, hematological, gastrointestinal, endocrine, immunologic, dermatologic, musculoskeletal, neurological or psychiatric disease.

III. Alcohol dependence, alcohol abuse or drug abuse within past one year. IV. Moderate to heavy smoking (>10 cigarettes/day) or consumption of tobacco products.

V. History of difficulty in swallowing VI. Clinically significant illness within 4 weeks before the start of the study VII. Asthma, urticaria or other allergic type reactions after taking any medication.

Blood loss/donation of more than 350 mL within 3 months prior to study dosing or difficulty in donating blood.

Participation in another clinical study not involving donation of blood, within the preceding 90 days of study start.

Subjects who have:

i. Systolic blood pressure less than 90 mm of Hg or more than 140 mm of Hg

ii. Diastolic blood pressure less than 60 mm of Hg or more than 94 mm of Hg. Minor deviations (1-3 mm Hg) at check-in may be acceptable at the discretion of the physician /investigator.

iii. Pulse rate below 50/min. or above 105/min.

Any waiver of these inclusion and exclusion criteria must be approved and documented by the qualified investigator and the sponsor on a case-by-case basis