The main objective of this trial is to investigate the effect on the exposure of metformin in plasma when administered as an oral multiple dose together with multiple oral doses of BI 764198 (Test, T) as compared to when metformin is administered as an oral multiple dose alone (Reference, R).

Inclusion Criteria:

• Healthy male or female trial participant according to the assessment of the investigator, as based on a complete medical history including a physical examination, vital signs (Blood pressure [BP], Pulse rate [PR]), 12-lead Electrocardiogram (ECG), and clinical laboratory tests.
• Age of 18 to 55 years (inclusive).
• BMI of 18.5 to 29.9 kg / m² (inclusive).
• Signed and dated written informed consent in accordance with ICH-GCP and local legislation prior to admission to the trial.
• Further inclusion criteria apply.

Exclusion Criteria:

• Any finding in the medical examination (including BP, PR or ECG) deviating from normal and assessed as clinically relevant by the investigator.
• Repeated measurement of systolic blood pressure outside the range of 90 to 140 mmHg, diastolic blood pressure outside the range of 50 to 90 millimeters of mercury (mmHg), or pulse rate outside the range of 50 to 90 beat per minute (bpm).
• Any laboratory value outside the reference range that the investigator considers to be of clinical relevance.
• Any evidence of a concomitant disease assessed as clinically relevant by the investigator.
• Further exclusion criteria apply.

Clinical studies sponsored by Boehringer Ingelheim, phases I to IV, interventional and non-interventional, are in scope for sharing of the raw clinical study data and clinical study documents. Exceptions might apply, e.g. studies in products where Boehringer Ingelheim is not the license holder; studies regarding pharmaceutical formulations and associated analytical methods, and studies pertinent to pharmacokinetics using human biomaterials; studies conducted in a single center or targeting rare diseases (in case of low number of patients and therefore limitations with anonymization). For more details refer to: https://www.mystudywindow.com/msw/datatransparency