A Study to Evaluate the Efficacy and Safety of AD-203

A Randomized, Double-blinded, Active Controlled, Non-Inferiority, Multicenter, Phase III Clinical Trial to Evaluate the Efficacy and Safety of AD-203 in Patients With Acute or Chronic Gastritis

This is a multicenter, active-controlled , randomized, double-blinded, paralleled group clinical study to evaluate the efficacy and safety of AD-203 to demonstrate the non-inferiority of AD-203 compared with Mucosta tab. in patients with acute or chronic gastritis

Inclusion Criteria:

• Age is over 20 years old, under 75 years old, men or women
• Patients diagnosed with acute or chronic gastritis by gastroscopy

Exclusion Criteria:

• Patients who is impossible to receive gastroscopy
• Patients taking other investigational drugs or participating in other clinical studies in 3 months prior to screening visit