Lesser Stamina Potion

Lesser Stamina Potion is a consumable item that recovers 20 stamina instantly.

Source
20 Lesser Stamina Potions can be purchased for each from alchemy vendors.

Crafting
Lesser Heal Potions can be crafted through Alchemy with 0 skill and the following materials:
 * 1 Mushroom
 * 1 Eye

Vendors

 * Valus
 * Nicodemus (Eldeir Village)
 * Pyros Landing
 * Oasis
 * Black Forest Outpost
 * Belhaven

Drops

 * Harpy
 * Cultist Scout
 * Lizardman
 * Scaled Lizardman
 * Large Spider
 * Troll