An Observational Study to Evaluate the Efficacy and Safety of K-CAB Tab./K-CAB ODT(Tegoprazan) in GERD Patients

Inclusion Criteria: 1. Subjects over 19 years of age as of the date of consent 2. Subjects with a total score of 8 or more in the Korean Gastroesophageal Reflux Disease Questionnaire (GerdQ) based on Visit 1 3. Subjects who voluntarily decides to participate and agrees in writing to the consent form of the study Exclusion Criteria: 1. Subjects who have hypersensitivity reactions and a medical history of Benzimidazole or components of the investigational drug 2. Subjects on Atazanavir, Nelfinavir, or Rilpivirine-containing medications 3. Pregnant and lactating women