Potions are a special type of item that drops from killing enemies or hitting bosses. Potions can be used on demand for a quick burst of healing. You can pick up a potion by walking near it while you have empty potion slots or you are not at full health. When you pick up a potion while you are at max potions but not full health, the potion will be automatically consumed and you are healed. You can increase your maximum potion carrying capacity by upgrading your belt.