Potion Sickness

The Potion Sickness debuff is a detrimental effect to prevent a player from consuming multiple healing potions in a short period of time. The Potion Sickness debuff is inflicted on the player by consuming any type of health restoring healing potion, mana potions and other potion types do not inflict this debuff.

Caused By
Only consuming a Lesser Healing Potion, or a standard Healing Potion will cause this debuff, to prevent a player from potion spamming and tanking through really hard mobs.

Prevented By
There is no way to prevent Potion Sickness, nor will there ever be a way.