Night Dragon's Breath

Night Dragon's Breath is a special consumable from the plants of Felwood.

Source
Night Dragon's Breath can be collected from using Cenarion Plant Salve on Corrupted Night Dragon (produces Cleansed Night Dragon) in Felwood. There are 4 Spots where the plants can be found.

As a quest objective
Libram of Constitution (quest)

Turn in to
 * 1x Black Diamond
 * 1x Lung Juice Cocktail
 * 1x Libram of Constitution
 * 4x Night Dragon's Breath
 * Reward:.