The purpose of this study is to determine the pharmacokinetic (PK) of a single oral dose of TAK-831 400 milligram (mg) in the fasted state and to estimate the effect of food on the PK of a single oral dose of TAK-831 400 mg when administered as tablet formulation in healthy participants.

The drug being tested in this study is called TAK-831. TAK-831 is being tested in healthy participants under fasting and fed conditions in order to determine the effect of food on the PK of single oral dose of TAK-831 tablet formulation. The study will enroll approximately 16 participants. Participants will be randomly and equally assigned (by chance, like flipping a coin) to 1 of the 2 treatment sequences following as:

• TAK-831 400 mg Fasted + TAK-831 400 mg Fed
• TAK-831 400 mg Fed + TAK-831 400 mg Fasted All participants will be asked to take single oral dose of TAK-831 tablet at the same time on Day 1 of each Intervention Period. This single center trial will be conducted in the United States. The overall time to participate in this study is 23 days. Participants will visit the clinic on Day -1 and remained confined until Day 3 of Intervention Period 1 and 2. A washout period of minimum 7 days will be maintained between the doses in each Intervention Period. Participants will make 3 visits to the clinic on Days 4, 6 and 8 on each Intervention Period and will be contacted by telephone 14 days after the last dose of study drug (Day 23) for a follow-up assessment.

Inclusion Criteria:

1. Weighs greater than or equal to (>=) 45 kilogram (kg) and has a body mass index (BMI) between 18.0 and 30.0 kilogram per square meter (kg/m^2), inclusive at Screening.

Exclusion Criteria:

1. Has received TAK-831 in a previous clinical study.
2. Has poor peripheral venous access.
3. Has donated or lost 450 milliliter (mL) or more of his or her blood volume (including plasmapheresis), or had a transfusion of any blood product within 45 days prior to first dose of study drug.
4. Has any dietary restrictions or preferences that may interfere with the conduct of the study.

The safety analysis set included all participants who were randomized and received at least 1 dose of study drug.

Treatment-emergent adverse events are adverse events that started after the first dose of study drug and no more than 14 days after the last dose of study drug (up to Day 23)

At each visit the investigator had to document any occurrence of adverse events and abnormal laboratory findings. Any event spontaneously reported by the participant or observed by the investigator was recorded, irrespective of the relation to study treatment.