Study to Assess Absolute Bioavailability (ABA) of TAK-906 and to Characterize Mass Balance, Pharmacokinetics (PK), Metabolism, and Excretion of [14C]-TAK-906 in Healthy Male Participants

The drug being tested in this study is called TAK-906. The study will determine ABA in Period 1, and ADME, and mass balance of TAK-906 after single oral administration in Period 2 in healthy adult male participants. Plasma and urine samples will be collected for PK determination; plasma, whole blood, urine, and feces samples will be collected for total radioactivity (TRA) determination; and plasma, urine, and feces samples will be collected to characterize the metabolite profiles of TAK-906.

The study will enroll approximately 6 participants. The study is designed to consist of 2 periods: Period 1 (ABA study period) and Period 2 (ADME study period). In Period 1 (ABA study period), all participants will receive single unlabeled oral 50 mg dose of TAK-906 as capsule followed by microdose of 100 μg (approximately 1 μCi) [14C]-TAK-906 as intravenous infusion followed by a washout period of at least 7 days before the dose in Period 2. In Period 2 (ADME study period), all participants will receive a single dose of 50 mg (approximately 100 μCi) [14C]-TAK-906 as an oral solution.

This single center trial will be conducted in the United States. The overall time to participate in this study is approximately 65 days including screening period. Participants will be contacted approximately 30 days after the last dose of study drug for a follow-up assessment.

Inclusion criteria

• Continuous non-smoker who has not used nicotine-containing products for at least 3 months prior to the first dosing and throughout the study.
• Body mass index (BMI) greater than or equal to (>=) 18.0 and less than (˂) 30.0 kilogram per square meter (kg/m^2) at screening.

Exclusion criteria

• QT interval corrected for heart rate using Fridericia's formula (QTcF) interval is greater than (>) 450 millisecond (msec) or Electrocardiogram (ECG) findings are deemed abnormal with clinical significance by the Investigator or designee at screening.
• Estimated creatinine clearance less than (<) 90 milliliter per minute (mL/min) at screening.
• Has tattoo(s) or scarring at or near the site of intravenous (IV) infusion or any other condition which may interfere with infusion site examination, in the opinion of the Investigator.
• Has infrequent bowel movements (less than approximately once per day) within 30 days prior to first dosing.
• Has received radiolabeled substances or has been exposed to radiation sources within 12 months of first dosing or is likely to receive radiation exposure or radioisotopes within 12 months of last dosing such that participation in this study would increase their total exposure beyond the recommended levels considered safe (that is weighted annual limit recommended by the International Commission on Radiological Protection [ICRP] of 3000 milli roentgen equivalent man [mrem]).
• Has been on a diet incompatible with the on-study diet, in the opinion of the Investigator or designee, within the 30 days prior to the first dosing and throughout the study.
• Donation of blood or significant blood loss within 56 days prior to the first dosing.
• Plasma donation within 7 days prior to the first dosing.
• Unable to refrain from or anticipates the use of:

• Any drug, including prescription and non-prescription medications, herbal remedies, or vitamin supplements within 14 days prior to the first dosing and throughout the study. Acetaminophen (up to 2 g per 24 hour period) and Milk of Magnesia® (that is, magnesium hydroxide [less than or equal to (<=) 60 mL per day after Day 3 in Period 1 and after Day 8 in Period 2]) may be permitted during the study, only after dosing, if necessary to treat adverse events (AEs). Additional administration of Milk of Magnesia® may be administered on other days at discretion of the Investigator.
• Any drugs known to significantly affect the absorption, distribution, metabolism or elimination of TAK-906 within 28 days prior to the first dosing and throughout the study. Appropriate sources (example, Flockhart Table TM) will be consulted to confirm lack of PK/pharmacodynamics interaction with study drug.