Its not a "Pill" There poisonus berries on The Hunger Games
This is how 'Fox Face' dies because Peeta Picks them and she assumes there edible and steals some well he picks more ~
Chat with our AI personalities
The nightlock pills are pills Cinna gives Katniss so she can kill herself if she happens to be captured by the Capitol, so she can escape torture.
Katniss looks at Peeta and Peeta looks at Katniss. Katniss silently holds out the nightlock berries (which will kill you in an instant). "1,2,3" and they both raise them to their lips. "Stop, stop!" shouts the Gamemakers. But they are mad.
He gathers berries. However, he gathers nightlock. Foxface eats some and dies. She is his first kill
Peeta is responsible for Foxface's death because as Katniss was hunting, he was collecting berries, although he didn't know they were Nightlock, a very poisonous berry. As Peeta stores them in his bag and walks away to go and get Katniss, Foxface tries to steal these berries and eats one of them also not knowing they are Nightlock. This makes Peeta the one responsible because he is the one that picked them and put them in his bag, although it was Foxface's fault for trying to steal them.
In the first book, Katniss and Peeta both survive because Katniss pulls out poisonous berries (referred to as nightlock) and gives half of them to Peeta, telling him that if they both can't live, then niether of them should. In Catching Fire, Finnick, Beetee, Enobaria, Johanna, Katniss, and Peeta all survive because Katniss blew up the force field to the arena.
I think the problem was when Katniss held out the nightlock berries in The Hunger Games and 'defied the Capitol'. But I know she started an uprising in district eight. That's when other districts started uprisings. And then Katniss decides to be district thirteen's mockingjay and leads the rebels. I don't want to ruin the book for you, but if you've already read them all, that's what mostly happens.