The investigators investigate the potential pharmacokinetic drug-drug interaction between HGP0918 and HGP0816 in healthy adult subjects who receive HGP0918 alone, HGP0816 alone, and both together in a 3 period repeatedly

Inclusion Criteria:

• Subjects who have ability to comprehend the objectives, contents of study and property of study drug before participating in trial and have willingness to sign of informed consent in writing
• Healthy male volunteers, aged 19 to 55 years.
• The result of Body Mass Index(BMI) is not less than 18.5 kg/m2 , no more than 27.0 kg/m2

Exclusion Criteria:

• Presence of medical history or a concurrent disease that may interfere with treatment and safety assessment or completion of this clinical study, including clinically significant disorders in digestive system, neuropsychiatric system, endocrine system, liver, cardiovascular system
• Someone has a declined liver function and Liver enzyme (AST, ALT or total bilirubin) level exceeds more than one and a half times normal upper range
• Somenone has a declined kidney function and his eGFR < 60mL/min/1.73m2