From FlyFF WIki
Cost: 250 gPotatoes
Info: Your pet HP will not decrease for 10 minutes when this item is used.
- Using this item will result in your pet's HP not decreasing at all for 10 minutes. Your pet will not need to consume any pet feed during this time.
- Only applies to pets hatched from eggs, does not have any effect on Cash Shop pets.
- As v12 this item may now be stacked in your pack up to 99.