From Brotato Wiki
Torture is a unique item. Only 1 of each unique item can be equipped, and it will then no longer be offered in the Shop, and no longer drop from loot crates.
When player has torture, they cannot heal in any other way. All other Healing methods such as HP Regeneration, Life Steal, and Consumables cease to function. Torture can be a really powerful item if you have not yet invested heavily in other forms of healing.