A Drug-Drug Interaction Study of Diltiazem and MK-5684 in Healthy Adult Male Participants (MK-5684-011)

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Continuous non-smoker who has not used nicotine- and tobacco-containing products for at least 3 months prior to the first dosing based on participant self-reporting * Body mass index (BMI) ≥18.0 and ≤32.0 kg/m\^2 * Able to swallow multiple tablets Exclusion Criteria: The main exclusion criteria include but are not limited to the following: * History or presence of any of the following: * Adrenal insufficiency * Hepatic or renal impairment * Clinically significant hypotension, cardiac arrhythmia, cardiac conduction abnormalities, or recurrent unexplained syncopal events * Second- or third-degree Atrioventricular (AV) heart block (except in participants with a functional artificial pacemaker) * Clinically significant sick sinus syndrome * Presence of any systemic fungal infection * Chronic infection * Glaucoma * Hypothyroidism * Stomach ulcer * Ocular herpes simplex * Has a first-degree relative with multiple unexplained syncopal events, unexplained cardiac arrest, or sudden cardiac death, or has a known family history of an inherited arrhythmia syndrome (including Brugada syndrome) * History of cancer (malignancy) * Unable to refrain from or anticipants the use of: Unable to refrain from or anticipates the use of: Any drugs, including prescription and non-prescription medications, herbal remedies, or vitamin supplements beginning 14 days prior to the first dosing