Craft itYou need×50Grass Radiant Gem×10World Tree Holy WaterMake it at (any of these)Ancient WorkbenchAdvanced WorkshopNeeds a Pal with Handiwork. Best:Solenne (Lv 8), Selyne (Lv 7), Wistella (Lv 6)Work: 30,000
Use it from your Inventory. Medicine can also go in a Medicine Rack so sick base Pals take it themselves.