This will be a double-blind, placebo-controlled study with a 4-way crossover design with subjects administered study drug (JMI-001), placebo, fexofenadine alone and naproxen alone on different study days, in conjunction with a quantity of alcohol estimated to be sufficient to produce a hangover the next day. The primary objective of the study is the evaluate the pharmacokinetics (PK) and pharmacodynamics (PD) of two different doses of JMI-001 administered in conjunction with alcohol to healthy adult subjects.