The Poisoned Chalice
Morgana gets poisoned by Merlin in the episode titled "The Poisoned Chalice," which is the 4th episode of Season 2 of Merlin. In this episode, Merlin uses a potion to poison the chalice intended for Arthur, but Morgana inadvertently drinks from it instead. This incident highlights the complexities of Merlin's decisions and the unforeseen consequences they can have on those around him.
In the poisoned chalice. it is the 3rd episode in series 1 of Merlin.
In the series "Merlin," there are several episodes where Merlin is hurt. Notably, in "The Poisoned Chalice" (Season 1, Episode 6), he is poisoned while trying to protect Arthur. In "The Coming of Arthur" (Season 2, Episode 12), Merlin faces danger during the battle against Morgana's forces, and in "The Last Dragonlord" (Season 3, Episode 5), he is injured while trying to save a dragon. These moments highlight the risks he takes to protect Arthur and the realm.
Merlin - 2008 The Poisoned Chalice 1-4 is rated/received certificates of: Netherlands:9
the moment of truth
It's episode 9 of Season 1: Excalibur
I believe hulu.com has the first two seasons of Merlin that you can watch for free and legally (it gets its money from the commercials it advertises on the site and intermittently throughout the show).
the mark of nimeuh the poisoned chalice excalibur le morte d'arthur
You can watch the last episodes of Merlin on BBC/ITV I Player.
season 3 episode 5
Season 4, episode 6
technically no, although he gets poisoned a few times like in episode 13. but he is a human then and poison may not affect him as much or at all whilst he is a half demon.