Adrenal Glands

From Liquipedia StarCraft 2 Wiki

Adrenal Glands is a Zergling upgrade, researched at a Spawning Pool. It requires a Hive and increases Zergling attack speed, increasing damage output. Zerglings with this upgrade and Metabolic Boost are known as Cracklings.

In Legacy of the Void[edit]

Adrenal Glands
Minerals 200     Gas 200     Game Speed 93 Hotkey: A
Researched from: Spawning Pool
Decreases Zergling attack cooldown to 0.35 (-0.15). Requires a Hive.

In Wings of Liberty and Heart of the Swarm[edit]

Adrenal Glands
Minerals 200     Gas 200     Game Speed 130 Hotkey: A
Researched from: Spawning Pool
Decreases Zergling attack cooldown to 0.587 (-0.109). Requires a Hive