Table 1 Entry criteria and exclusion criteria

Entry criteria

(i) Age ≥ 20 years

(ii) Type 2 diabetes mellitus with HbA1c > 6.0%

(iii) Body mass index (BMI) more than 20 and less than 30

(iv) Treatment with diet, exercise therapy and daily DPP4 inhibitors

Exclusion criteria

(i) Type 1 diabetes

(ii) Severe diabetic metabolic complications, such as ketoacidosis

(iii) Severe liver dysfunction

(iv) Pregnant or breast‐feeding women and those who might be pregnant