The Nanab Berry was added to Pokémon GO on February 16, 2017. Using a Nanab Berry on a wild Pokémon will make it 20× less likely to attack or dodge, making it easier to hit it with a Poké Ball. The Berry's effect lasts until the Pokémon breaks out of a thrown ball. When fed to a Gym defender, a Nanab Berry restores motivation 25% more than a Razz Berry does.
ナナのみ Nana Fruit
Feed this to a Pokémon to calm it down, making it less erratic.
Nanab Berries are obtainable starting at level 4. They are rewarded for leveling up every 4 levels, starting from level 23.
Nanab Berries can also be repeatably obtained from
A Nanab tree appeared in Episode 4 of Where Are You Going, Eevee?, where Eevee found one soon after arriving on Melemele Island. It climbed up to it and shook its trunk, subsequently shaking down several Nanab Berries for it to eat. Multiple other Nanab trees appeared in Episode 6 of Where Are You Going, Eevee?, where Eevee shared some Nanab Berries with Pikachu and his friends.