A Study to Assess the Relative Bioavailability of Oral Tavapadon in Healthy Adult Participants

Inclusion Criteria: * Body Mass Index (BMI) ≥ 18.0 to ≤ 32.0 kg/m\^2 after rounding to the tenths decimal at the time of screening. BMI is calculated as weight in kg divided by the square of height measured in meters. * A condition of general good health, based upon the results of a medical history, physical examination, vital signs, laboratory profile, and a 12-lead ECG * Females, Non-Childbearing Potential due to meeting the following criteria: * Permanent sterility due to a hysterectomy, bilateral salpingectomy, bilateral oophorectomy. * Non-surgical permanent infertility due to Mullerian agenesis, androgen insensitivity, or gonadal dysgenesis; investigator discretion should be applied to determining study entry. * Postmenopausal female who is age ≤ 55 years with no menses for 12 or more months without an alternative medical cause AND a follicle-stimulating hormone (FSH) level ≥ 30 IU/L. Exclusion Criteria: * History of epilepsy, any clinically significant cardiac, respiratory (except mild asthma as a child), renal, hepatic, gastrointestinal, hematologic or psychiatric disease or disorder, or any uncontrolled medical illness. * History of suicidal ideation within one year prior to study drug administration as evidenced by answering "yes" to questions 4 or 5 on the suicidal ideation portion of the Columbia-Suicide Severity rating scale (C-SSRS) completed at Screening, or any history of suicide attempts within the last two years. * Use of tobacco- or nicotine-containing products within 90 days prior to the first dose of study treatment.