Board Thread:False Info and Speculative Discussion/@comment-4148963-20150731235217/@comment-4091815-20150801170731

The specific form of Wolfsbane used in Season 1 Magic Bullet is a most powerful poison. It's not something we've encountered since.

The Mute said he wasn't there to kill Peter so he would not likely have used the most poisonous kind of wolfsbane just to incapacitate him.

Also, Peter was suffering none of the effects of Magic Bullet poisoning and was hardly damaged making it obvious it was a more mundane, less deadly form. It was almost like the wolfsbane bullets fired into Boyd and Derek during Frenemy - they didn't heal right away but didn't really hurt them beyond that.