An item that fully revives a fainted Pokémon and is obtained at the Herb Shop In Lavaridge Town. It costs $2800 to buy, and you can sell it for $1400.
In Pokemon Black/White, the Revival Herb can be bought in the Driftveil City market from the two people in the booth across from the man in the suit.
The Revival Herb lowers the friendship of your Pokémon if the Herb is given to it. This is probably because the Herb is so bitter.
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