The study examines the medicine valacyclovir, which is available as the tablet brand Valtrex and as a liquid oral suspension. Both forms contain the same active ingredient and are taken by mouth.

The purpose is to compare the bioavailability of the liquid suspension with that of the tablet form and to see whether eating food changes how much of the drug reaches the bloodstream.

Healthy volunteers will receive each form of the medicine in separate periods, sometimes on an empty stomach and sometimes after a meal, using a crossover design. Blood samples will be collected to measure the drug levels over time, which is part of a pharmacokinetic assessment, and participants will be monitored for any side effects.