Hi! This is a weird question, but um. I was just watching Champions of the Just, and the scene where Barris drinks the lyrium confused the hell out of me -- the lyrium kit Cullen has in Perseverance looks like it's more for something taken like heroin, injected or snorted, but then they just... drink it? I'm really confused on what exactly the lyrium kit Cullen has *does* or *is*. Does World of Thedas explain it, or do you have any theories?
Not weird at all, interesting actually and this is going on my list of lore I need to make a specific post for. But for now, I will simply answer your question.
Here’s the thing, Lyrium comes in several forms:
The list above is categorized most dangerous to least dangerous.
Raw Lyrium is extremely dangerous just to touch and should never be consumed, these are the veins you find throughout the Deep Roads and are only ever mined by Dwarves. So not important to us for now.
Lyrium Sand is very volatile and explosive, it’s lyrium that has been ground course and essentially found as granules of lyrium. Not much use for this by Templars and so again, I’m skipping this for now.
Now Dust and Liquid are the two types of Lyrium you are looking at, which liquid Lyrium is Lyrium Potions. Both Dust and Liquid Lyrium have been processed by Dwarves and to an extent are completely safe for consumption. However, as you would expect Lyrium Dust requires extra preparation before you can consume it. You do not want to just shove powdered Lyrium in your mouth and hope it all makes it down (think about swallowing powdered drink mix…).
This is where a Templar’s philter comes in or as you know it, Cullen’s box of tools. Cullen can use it to at any time or place make Lyrium dust into a Lyrium draught/potion. Templars more often use philters because they are mobile and dust has a longer shelf life than liquid.
When Ser Barris is using the potions, it is 1) because he has and needs immediate access to extra lyrium reserves and 2) because he requires more than his daily dose to amp up the Templar ability they use in the quest.
So basically Barris is only using a potion to quickly supplement his lyrium dosage, while Cullen actually uses the tools in his box to turn lyrium powder into a drinkable form.
Which my source for this is actually from the crafting of potions throughout the Dragon Age series and from Ser (the character), who explains philters. Ser is the Templar specialization trainer for Warriors in Dragon Age Inquisition.