A Study to Evaluate the Safety, Pharmacokinetics (PK) and Pharmacodynamics (PD) for TAK-906 in Participants With Diabetes Mellitus and Gastroparesis (DG) or With Idiopathic Gastroparesis (IG)

Exclusion Criteria

• •The participant must be excluded from participating in the trial if the participant:
• •1. Has acute severe gastroenteritis and pronounced dehydration in the past 48 hours prior to Screening, gastric pacemaker, chronic parenteral feeding or persistent severe vomiting.
• •2. Has a known disturbance of small intestinal absorption, exocrine pancreatic function, liver metabolism, and pulmonary function.
• •3. Has a history of anorexia nervosa or bulimia.
• •4. Previous history of bezoars (the presence of retained liquid, bile, or small amounts of poorly organized food residue is permitted).
• •5. Difficulty swallowing solid food or pills.
• •6. Prior surgery involving the luminal gastrointestinal (GI) tract (cholecystectomy, appendectomy, and hysterectomy are permitted if performed greater than (\>) 3 months prior to SmartPill test).
• •7. Any abdominal or pelvic surgery within the past 3 months.
• •8. Known or history of inflammatory bowel disease.
• •9. Has active diverticulitis, diverticular stricture, and other intestinal strictures.
• •10. Had major surgery, donated or lost 1 unit of blood (approximately 500 milliliter \[mL\]) within 4 weeks prior to the pretrial (screening) visit milligram per deciliter (mg/dL) (14.99 millimole per liter \[mmol/L\]) during any visit up to and including the randomization visit (Period 1 Day 1 predose). Note: If the participant meets this exclusion criterion and the investigator believes that the value is not consistent with the participant's current self-monitoring blood glucose values, the participant should not be excluded at this time. The visit can be repeated within 5 to 7 days.
• •11. Has had diabetic ketoacidosis (within the prior 4 weeks).