Hypostim

Hypostims are items in Deus Ex: Human Revolution. They are used from the menu, and when they are used Adam gains 50 extra health points, to a maximum of 200, temporarily. After he loses them, he will not regenerate the extra amount.

In-game description
The HypoStim contains 1 dose of an injectable stimulant that increases the health bar above its usual maximum of 100 if the bar is already full.

Once these extra points have been depleted, they will not regenerate.