Racecadotril Suspension Linearity Study & Comparative Bioavailability Versus Granules

Inclusion Criteria: * Healthy male, * 18 to 45 years old, * be certified as normal by a comprehensive clinical assessment (detailed medical history and a complete physical examination), arterial blood pressure (BP), heart rate (HR), an ECG and laboratory investigations (haematological, blood chemistry tests, urinalysis), the results of which are within the normal range and/ or judged by the investigator as clinically acceptable for healthy subjects, * Body Mass Index (BMI) between 18 and 28 kg/m2. Exclusion Criteria: * History of cardiovascular, pulmonary gastro-intestinal, hepatic, renal, metabolic, haematological, neurological, psychiatric, systemic, or infectious disease. * Any other condition which, in the opinion of the Investigator, would jeopardize the safety of the subject or impact the validity of the study results. * Subject has used any drug including OTC products two weeks before the scheduled administration of study drug, except paracetamol (maximum 1g/day).