[[File:|left|22px]]Arve Sovereign Serum[[File:|right|22px]]
Romanji Arubu no Reiyaku
Description A remedy formulated from Zemuria moss. It boosts the immune system to fight off toxic agents.
Type Key Item
Price Non-purchase
Sell N/A
Effect Full recovery of poisoning ailments
Found Locations
Other Kaldia Limestone Cave - 5th Map on the Central Pillar
Exist in Games(s)
Game Appearances The Legend of Heroes: Trails in the Sky + EVO

The Arve Sovereign Serum is a key recovery item exclusive only in The Legend of Heroes: Trails in the Sky. It was required to heal Agate Crosner after being poisoned from shielding Tita Russell during the Factory Incident quest.

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