Ingredients are used to craft consumable items in Dragon Age: Origins and Dragon Age: Origins - Awakening.
Ingredients are obtained from lootable objects, enemy drops, and merchants. An appropriate recipe and the associated skill-level is required to use them, although a few (deep mushroom, elfroot and lyrium dust) can be consumed directly in the PC version.
There are three crafting professions that require ingredients in Dragon Age: Origins: Herbalism, Poison-Making, and Trap-Making. Dragon Age: Origins - Awakening is required for Runecrafting.
Herbalism
Concentrator Agent
Deep Mushroom
Distillation Agent
Elfroot
Fire Crystal
Flask
Frostrock
Lifestone
Lyrium Dust
Spirit Shard
Poison-making
Blood Lotus (Awakening)
Concentrator Agent
Corrupter Agent
Deathroot
Deep Mushroom
Demonic Ichor
Distillation Agent
Fire Crystal
Flask
Frostrock
Frozen Lightning
Lifestone
Lyrium Dust
Rashvine Nettle (Awakening)
Spirit Shard
Toxin Extract
Trap-making
Blood Lotus (Awakening)
Concentrator Agent
Corrupter Agent
Deathroot
Distillation Agent
Fire Crystal
Frostrock
Frozen Lightning
Glamour Charm
Lifestone
Madcap Bulb (Awakening)
Metal Shard
Rashvine Nettle (Awakening)
Spirit Shard
Toxin Extract
Trap Trigger
Rune-crafting
Blank Runestone (Awakening)
Etching Agent (Awakening)