Bioavailability Study of BIA 5-453

This was a Single-centre, two-way crossover, randomised, open-label study in 12 healthy male volunteers. Subjects received a single oral 200 mg dose of BIA 5-453 following a standard meal in one period, and following at least 10 hours of fasting in another period. Treatment periods were separated by a washout interval of 2 weeks or more.

Inclusion criteria

• aged between 18 and 45 years, inclusive.
• had a body mass index (BMI) between 19 and 30 kg/m2, inclusive.
• were healthy as determined by pre-study medical history, physical examination, vital signs, complete neurological examination and 12-lead ECG.
• had negative tests for HBsAg, anti-HCVAb and HIV-1 and HIV-2 Ab at screening
• had clinical laboratory test results clinically acceptable at screening and admission to the first treatment period.
• had negative screen for alcohol and drugs of abuse at screening and admission to the first treatment period.
• were non-smokers or smoked ≤ 10 cigarettes or equivalent per day.
• was able and willing to give written informed consent.

Exclusion criteria

• 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.
• had a clinically relevant surgical history.
• had a clinically relevant family history.
• had a history of relevant atopy or drug hypersensitivity.
• had a history of alcoholism or drug abuse.
• consumed more than 14 units of alcohol a week.
• had a significant infection or known inflammatory process at screening or admission to the first treatment period.
• had acute gastrointestinal symptoms (e.g., nausea, vomiting, diarrhoea, heartburn) at the time of screening or admission to the first treatment period.
• used medicines within 2 weeks of admission to first period that affected the safety or other study assessments, in the investigator's opinion.
• used any investigational drug or participated in any clinical trial within 3 months prior to screening.
• participated in more than 2 clinical trials within the 12 months prior to screening.
• donated or received any blood or blood products within the 3 months prior to screening.
• was a vegetarian, vegan or with medical dietary restrictions.
• could not communicate reliably with the investigator.
• was unlikely to co-operate with the requirements of the study.
• was unwilling or unable to give written informed consent.