Increases the Effort Values for the Pokémon's Hit Point stat up by 10EVs until the Pokémon hits 100EVs in this stat. As of Pokémon Sword & Shield, it can now be used to max out a stat. Increases the Pokémon's Happiness. Raises the HP of one Pokémon. A nutritious drink for Pokémon. It raises the base HP of one Pokémon. More @Wikipedia
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