Study to Evaluate the Safety, Tolerability and PK of EC-18 After Oral Administration in Healthy Volunteers

Inclusion Criteria:

* Healthy adult male aged between 19 and 45 years, inclusive, at the time of providing the informed consent form
* Body weight ≥ 50 kg, and calculated BMI in the range of 18.5 kg/m2 ≤ BMI \< 25.0 kg/m2 ☞ BMI(body mass index) = Body weight (kg)/\[height (m)\]2
* No inherited or chronic disease and pathologic symptoms or findings from internal examinations
* Eligible subject based on findings from clinical laboratory tests, such as hematology, blood chemistry, urinalysis and immunoserology, and ECG, as conducted by a responsible doctor depending on characteristics of the drug
* Written consent on voluntary decision of participation and compliance with precautions after being fully informed of and completely understanding this trial
* Consent to practice medically acceptable contraception during the trial

Exclusion Criteria:

* Hypersensitivity to a drug containing an ingredient of the investigational product (EC-18) or similar ingredient (e.g., deer antler) or other drugs (e.g., aspirin, antibiotics) or medical history of clinically significant hypersensitivity
* Active infection such as chronic or local infection based on screening tests or inquiry, verifiable medical records
* Serious infection that required hospitalization or use of antibiotics within 30 days prior to the first dose of the investigational product, based on an inquiry or verifiable medical records
* Presence of a clinically significant hepatic, renal, gastrointestinal, respiratory, musculoskeletal, endocrine, nervous, blood, cardiovascular, urogenital, psychiatric disorder or its prior history
* (1) Presenting tuberculosis or prior history of tuberculosis or (2) positive results from a QuantiFERON® -TB Gold in Tube Assay conducted due to a contact with a tuberculosis patient within the past 3 months or signs and symptoms of suspected tuberculosis
* Prior history of a gastrointestinal disorder (e.g., Crohn's disease, ulcer) or surgery (except for simple appendectomy or hernia surgery) that may affect drug absorption, etc.