Googled the following: Cyanide poisoning, treatments for cyanide poisoning, counteracting cyanide.
The story is present-day, and the scene is happening in (alternate universe, dystopic) Orlando, Florida.
My character wants to extract some information from a guy who would prefer swallowing a cyanide caplet to divulging said information. They're at a bar, and she's sneaky enough to be able to slip things into his drink. She knows that he's likely to try to poison himself the second that he figures out what she's after. To prevent this, I'd like her to be able to give him something that would at least keep him alive, conscious, and able to answer questions for a few minutes. It doesn't matter if he ultimately dies—in fact, it's preferable that he does—as long as he lives a bit longer than he intends.
What would be most effective for these purposes? And how clearheaded would be be after consuming all of these chemicals (plus alcohol, presumably)? Bonus points for not having a distinctive taste.