A Study of Compare the Pharmacokinetic, Pharmacodynamic and Safety/Tolerability Characteristics Following Multiple Oral Administration of AD-234, AD-2341, and AD-2342 in Healthy Adults

Inclusion Criteria: * Healthy adult volunteers aged 19 to 50 years, inclusive, at the time of screening * Body weight between 50.0 kg and 90.0 kg, inclusive, and body mass index (BMI) between 18.5 kg/m\^2 and 29.9 kg/m\^2, inclusive, at the time of screening (BMI = weight \[kg\] / height \[m\]\^2) * For female participants: not pregnant, not breastfeeding, or surgically sterile (e.g., bilateral tubal occlusion, hysterectomy, bilateral salpingectomy, bilateral oophorectomy) Exclusion Criteria: * Participation in another clinical study with an investigational drug within the 6 months from scheduled first administration Other exclusions applied