Edward was tired of being wrong.
He was wrong when he followed Archer… wrong when he took the drink, and especially wrong when he hadn't gone running, seeing Zolf Kimblee sleeping on a couch in one for the extra rooms of Archer's, admittedly, nicely sized house. Running could have been an option… but his leg was gone… alchemy? He didn't trust his speed versus Kimblee's… Rationality slowed one down… insanity added speed. A cold palm ran over Edward's face and he shivered.
"fever." a calm voice said. Archer. Kimblee seemed to be thinking, then he heard walking, and the clink of glass. The rim of a cup was being pressed to Ed's lips, and he fought it. Coaxing fingers dug past his lips and he bit them. A blow to his cheek made the world swim with stars and Edward feared if he opened his eyes he would throw up. The next time the cup was offered he drank… it was slimy and bitter… he hated it, but drank it down to the dregs, which tasted like someone had boiled wool. An encouraging hand petted his cheeks, and Edward sank into a dreamless sleep, confused but rapidly plummeting.