Board Thread:False Info and Speculative Discussion/@comment-24744701-20160311092230/@comment-26879545-20160313225927

ATeenWolfFan wrote: You say he was injected with something that made him weak, that is not canon either. We have no clue what he was injected with. But it obviusly didnt make him weak in he got up and kicked theos ass. He was most likely injected with the same thing Liam was injected with. Theo told someone (I don't remember if it was Malia or Deucalion) it was a special blend of Wolfsbane that the Doctor's created with the purpose of supressing Werewolf abilities so they wouldn't be able to find the lair again.

If it's supressing their abilities, that means it's weakening them. Deucalion had been hooked up to it for days. If there were side effects, he would be the one to exhibit them.