Study of the Excretion of Orally Administered Corticosteroids for the Improval of the Detection of Said Substances in Anti-doping Controls

Inclusion Criteria: * Male volunteers aged between 18 and 55 years. * Able to understand and accept the trial procedures and able to sign an informed consent prior to any study-mandated procedure. * History and physical examination that demonstrate not presenting organic or psychiatric disorders. * ECG, blood and urine tests performed before the experimental session within normal limits. Minor or occasional variations of these limits will be allowed if, in the opinion of the Principal Investigator and taking into account the state of science, they have no clinical significance, do not pose a risk to the subject and do not interfere in the product evaluation. These variations and their non-relevance will be specifically justified in writing. * Body mass index (weight/height\^2) between 19 and 27 kg/m2 and weight between 50 and 100 kg. BMI of 27-28 kg/m2 may be included according to Principal Investigator's criteria. Exclusion Criteria: * Failure to meet inclusion criteria. * History of allergy, idiosyncrasy, hypersensitivity or adverse reactions to glucocorticoids or any of the excipients. Serious adverse reactions to any drug. * Contraindications to treatment with study drugs (according to the respective summary of product characteristics, SmPC). * Clinical background or evidence of gastrointestinal, hepatic, renal disorder or others that may involve an alteration of the absorption, distribution, metabolism or excretion of the drug. * Clinical background or evidence of psy…