Overheal is a buff effect which increases a player's health up to 150% of their original health. It can be achieved in many ways, but the most common is to be healed from a Doctor's secondary while your health is already full, an Overheal will fade away in exactly 15 seconds on all classes. When a player is overhealed, a noticeable team-coloured particle effect will be emitted from their body, making it easy to identify a buffed player. Other than for mediguns, certain weapons can also provide Overheal under certain circumstances. For example, the Katana can grant Overheal to the user after they killed an enemy, giving them 50% overheal (if they have full health upon killing that enemy), the Sub Shotgun also does this.