The purpose of this study is to investigate the effect of BIA 9-1067 on rasagiline pharmacokinetics in healthy subjects.

Single-centre, open-label, randomised, three-way crossover study consisting of 3 single-dose periods separated by a washout of 14 days or more

Inclusion Criteria:

• Subjects who were able and willing to give written informed consent.
• Male or female subjects aged between 18 and 45 years, inclusive.
• Subjects of body mass index (BMI) between 18.0 and 30.0 kg/m2, inclusive.
• Subjects who were healthy as determined by pre-study medical history, physical examination, vital signs, complete neurological examination and 12-lead ECG.
• Subjects who had negative tests for HBsAg, anti-HCVAb and HIV-1 and HIV-2 Ab at screening
• Subjects who had clinical laboratory test results clinically acceptable at screening and admission to each treatment period.
• Subjects who had a negative screen for alcohol and drugs of abuse at screening and admission to each treatment period.
• Subjects who were non-smokers or ex-smokers for at least 3 months.
• (If female) She was not of childbearing potential by reason of surgery or, if of childbearing potential, she used one of the following methods of contraception: double barrier or intrauterine device.
• (If female) She had a negative pregnancy test (β-HCG) at screening and admission to each treatment period.

Exclusion Criteria:

• Subjects who had a clinically relevant history or presence of respiratory, gastrointestinal, renal, hepatic, haematological, lymphatic, neurological, cardiovascular,psychiatric,musculoskeletal, genitourinary,immunological,dermatological,endocrine, connective tissue diseases or disorders.
• Subjects who had a clinically relevant surgical history.
• Subjects who had any significant abnormality in the coagulation tests.
• Subjects who had any significant abnormality in the liver function tests (a case-by-case decision for any abnormality was to be discussed with the Sponsor before inclusion).
• Subjects who had a history of relevant atopy or drug hypersensitivity.
• Subjects who had a history of alcoholism or drug abuse.
• Subjects who consumed more than 14 units of alcohol a week.
• Subjects who had a significant infection or known inflammatory process at screening or admission to each treatment period.
• Subjects who had acute gastrointestinal symptoms (e.g., nausea, vomiting, diarrhoea, heartburn) at the time of screening or admission to each treatment period.
• Subjects who had received fluoxetine within 5 weeks of admission to the first period.
• Subjects who had used any other medicines within 2 weeks of admission to first period that could affected the safety or other study assessments, in the investigator's opinion.
• Subjects who had previously received BIA 9-1067.
• Subjects who have used any investigational drug or participated in any clinical trial within 90 days prior to screening.
• Subjects who have donated or received any blood or blood products within the 3 months prior to screening.
• Subjects who were vegetarians, vegans or have medical dietary restrictions.
• Subjects who could not communicated reliably with the investigator.
• Subjects who were unlikely to co-operate with the requirements of the study.
• Subjects who were unwilling or unable to give written informed consent.
• (If female) She was pregnant or breast-feeding.
• (If female) She was of childbearing potential and she did not use an approved effective contraceptive method (double-barrier, intra-uterine device) or she uses oral contraceptives.