Health Regen is a stat that heroes start with and can obtain more through items. Per second, heroes will regenerate their amount of health regeneration as health. It must not be confused with healing, which refers to the ability of helping both yourself and other players regain health.

Starting Base Regeneration

 
Health Regeneration on the player's HUD

Heroes usually start with a +2 HP/sec Health Regeneration

Bonus Health regeneration

Additive health regeneration

Multiplicative health regeneration

"Survival" Powerup Buff

Power-ups Spawn after the 10 minute mark and subsequently after 5 minutes intervals. There's a 1/4 chance of the survival power up spawning in one of the two off-lane bridges.

The survival power up will grant you an additive +400 HP Bonus Health on pickup, and a multiplicative 1% health regeneration

The effect will last a total of 160 seconds. Picking more than one Survival Power Buff will reset the timer, meaning that you cannot stack multiple instances of it.

The timer of the Survival Power buff can be seen at the left-middle quadrant of the screen, next to a small portrait of the hero. It shows a mint colored bar with the word "survival" on it. The bar decreases over time until the effect runs out.

Fortitude Item

Fortitude is a Tier 3 Vitality Item that grants 4% Max health regeneration after 11 seconds of not taking damage. It's currently the only item in the game that grants multiplicative health regeneration

Items with health regeneration