A Study of Sublingually Administered (S)-Ketamine Oral Solution in Healthy Participants

Inclusion Criteria:

* Body mass index (BMI) between 20.0 and 28.0 kilogram per meter square kg/m\^2 inclusive (BMI = weight/height\^2) with a minimum weight of 60 kilogram (kg) and a maximum of 100 kg
* Participant must be healthy based on clinical laboratory tests performed at screening. If the results of the serum chemistry panel, hematology or urinalysis are outside the normal reference ranges, retesting of an abnormal lab value that may lead to exclusion will be allowed once during the screening phase
* Non-smoker (not smoked for 3 months prior to screening)
* A woman must have a negative serum beta-human chorionic gonadotropin (beta-hCG) at screening and a negative urine pregnancy test prior to dosing on Day 1
* A woman must agree not to donate eggs (ova, oocytes) for the purposes of assisted reproduction during the study and for at least 1 month after the last study drug administration

Exclusion Criteria:

* Cardiac arrhythmias or other cardiac disease, hematological disease, hypertension, lipid abnormalities, respiratory disease, diabetes mellitus, renal or hepatic insufficiency, thyroid disease, Parkinson's disease, infection, glaucoma, epilepsy or any other illness that the Investigator considers should exclude the participant
* Positive for hepatitis B surface antigen (HBsAg), hepatitis C virus (HCV) antibodies or human immunodeficiency virus (HIV) antibodies at screening visit
* Drinks, on average, more than 5 cups of tea/coffee/cocoa or 8 cans of cola per day
* Clinically significant acute illness within 7 days prior to study drug administration
* Donation of 1 or more units (approximately 450 milliliter \[mL\]) of blood or acute loss of an equivalent amount of blood within 90 days prior to study drug administration