HP Supplement is a special item in Counter-Strike Online.


This item only available after Zombie Scenario Re:boot.

A combat assistance product developed by Dr.A. This will help your HP to take attack from zombies in the battle. By possessing this item in your inventory, your health will upgrade to a certain level varying on the grade of the item.


HP Supplements can be obtained randomly by opening Dr. A's Trunk after Zombie Scenario Re:boot. The grades of HP Supplements acquired varies on the grade of Dr. A's Trunk. For instance, opening Low Grade Dr. A's Trunk will give you a Low Grade HP Supplement.


Item Grade Effect
Lowhealthup Inferior Health will upgrade to stage 3 in zombie scenario mode
Midhealthup Intermediate Health will upgrade to stage 5 in zombie scenario mode
Highhealthup Superior Health will upgrade to stage 7 in zombie scenario mode


  • This item replaces the Stamina Drug which was removed after Zombie Scenario Re:boot.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.