Amulet of Sustaining Health 2014
Wondrous Item, uncommon, (requires attunement)
While wearing this amulet, you need to eat and drink only once every 7 days. In addition, you have advantage on saving throws against effects that would cause you to suffer a level of exhaustion.
Source: Vault of Magic (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details