One of the most interesting things about Wicked is the mysterious green elixir. The elixir is first introduced when the Wizard has Elphaba's mother drink it in No One Mourns The Wicked. Some people believe that the green elixir is what makes Elphaba's skin green. After her mother dies giving birth to Nessarose, Elphaba keeps it as a reminder.
The real relevance of the green elixir comes out during act two. When Elphaba is "melted", she leaves the green elixir behind for Glinda. Glinda then recalls the Wizard having an identical bottle from when they went to his palace in act one. She discovers that the Wizard is Elphaba's father, and sends him away.
- Backstage, there is a milk jug full of the green elixir. This is in case there is any mishaps with the glass bottles during the course of running the show or if the elixir in the bottle starts to lose its color.
- The bottle used during the dance sequence in No One Mourns The Wicked has a green glow-stick inside to give it luminescence to contrast with the dark stage lighting.