Strategic considerations

The purpose of this study is to evaluate the relative bioavailability of three immediate-release table formulations of ABBV-903 under fasting conditions in healthy volunteers, and to evaluate the effect of food on the pharmacokinetics of three immediate-release table formulations of ABBV-903.

Inclusion Criteria:

• Body Mass Index (BMI) is >= 18.0 to <= 32.0 kg/m2 after rounding to the tenths decimal, at screening and upon initial confinement.
• A condition of general good health, based upon the results of a medical history, physical examination, vital signs, laboratory profile and a 12-lead electrocardiogram (ECG).

Exclusion Criteria:

• History of any clinically significant illness/infection/major febrile illness, hospitalization, or any surgical procedure within 30 days prior to the first dose of study drug.
• History of epilepsy, any clinically significant cardiac, respiratory (except mild asthma as a child), endocrine, renal, hepatic, gastrointestinal, hematologic or psychiatric disease or disorder, or any uncontrolled medical illness.