No items prevent status. However, the following berries cure a status condition:
Aspear Berry: Defrosts the user if they are frozen
Cheri Berry: Cures paralysis
Chesto Berry: Makes the holder wake up if they are asleep
Pecha Berry: Cures poison and bad poison
Persim Berry: Makes the holder snap out of confusion
Rawst Berry: Cures burn
Lum Berry: Cures all status conditions and confusion
If you're playing competitively, only the Lum and Chesto Berries are viable. You can use Chesto Berry with Rest, since the user will be fully healed and wake up. This is a decent recovery option for Pokemon that lack more reliable recoveries like Soft-Boiled, Roost, Recover... If you want to be safe from status and you don't have Rest, then Lum Berry is a viable option.
In Pokemon Gold/Silver/Crystal, those berries didn't exist. Instead, there were:
Bitter Berry: Cures confusion
Burnt Berry: Defrosts the user
Ice Berry: Cures burn (I don't really understand that logic. I guess the berry could melt and the water would cool the burn?)
Mint Berry: Makes the user wake up
PRZCureVerry: Cures paralysis
PSNCureBerry: Cures poison (my source says nothing about bad poison)
MiracleBerry: Cures all status and confusion
Source
