Hermes' Multivitamins

Hermes gives Percy some multivitamins which can counteract any magic for a time. Annabeth gives Percy (and his fellow cagemates) these vitamins in order to reverse their fate after being turned into guinea pigs by Circe. There are different flavors, and come in different shapes and flavors like lemon Minotaur]s], grape [[Furies (or possibly hydras), and such.