Restores Wonder Boy to human form. Increases life capacity by one heart. Hidden in seven treasure chests. You can't finish the game without it. When the number of stones you have is small, you cannot buy certain equipment in the shop.
Life is restored a little.
Life is restored the most. Restores life when heart points reach zero. You can have a maximum of three medicines. To use weapon items, first select them from the Status Screen. Use them by pressing Button 2 and the D-Button down.