Continuity mistake: In the beginning of the movie, when John and Michael are fighting, John has a red bandana tied around his head. When they all rush over to Nana the bandana is gone. Right after that, when he is in bed the bandana is back on him and his mother takes it off.
Continuity mistake: When Tinker Bell is about to ruin Wendy's reflection, she doesn't have one. Later, when the fish is snapping at her she doesn't have one either, but even later in the movie, she has one.
Continuity mistake: When the lost boys are going into their hiding place, Hangman's Tree, the trapdoor is opened by one of them pulling on a noose. However, when Hook and his minions show up later, the noose has vanished.
Continuity mistake: As Wendy is singing 'Your mother and mine' she lays Michael down. As she is laying him down, her nightgown turns white. The next time you see her, her nightgown is blue again, also her bow changes colour too.
Continuity mistake: When Mr. Darling knocks over the building blocks that Nana just put together, you can see that there are many blocks scattered all over. In the next close-up shot of Nana (when she knocks over the remaining blocks), some blocks have disappeared.
Continuity mistake: The first time we see the pirates a group of them are doing dagger-throwing at a chalk drawing, but in the very first shot the drawing is missing.
Continuity mistake: When Mr. Darling is upset about his chalk-covered shirt front, he runs his finger through the chalk map and erases a bit of the yellow mountain and blue lake, but when Wendy asks him what he's done to his shirt, the yellow chalk mountain is untouched again, and in the next shot as Mary wipes off the chalk, that erased yellow part reappears before Mary wipes it entirely.
Continuity mistake: During the final fight, the sail is supported with two ropes and a pulley. Next shot, the sail is only supported with one rope and no pulley.
Continuity mistake: After Peter cuts the rope around the mast where the kids are tied, there's a brief shot of Peter standing sideways on the mast. Look below and you'll notice that the ropes have vanished.
Continuity mistake: Wen Michael warns John and the lost boys about the Native Americans he is kicked out. In the aerial angle Michael's teddy bear disappears.
Continuity mistake: When we see Tiger Lily tied up to the anchor, the left side of the rope goes over the right side. A shot later it's the other way around.
Continuity mistake: When the pirates attack the crow's nest where the kids are, one of them cuts his moustache with his sword. Later on his moustache grows back.
Continuity mistake: When we see the windows of the Darling nursery, at the start and at the end, their height repeatedly switches between having either five or six horizontal rows of glass panes.
Continuity mistake: During the bomb present scene, Peter Pan's dagger is missing.
Continuity mistake: Before Michael is abducted by the Native Americans his pajamas swap from pink to white.
Continuity mistake: During the final fight, the Jolly Roger flag disappears and then reappears.
Continuity mistake: When Peter is setting sail to London, the empty dagger sheath has disappeared.
Continuity mistake: During the final fight, Peter's dagger sheath disappears after jumping and then grabbing onto the rope.
Continuity mistake: After Captain Hook tricks Peter into promising not to fly, Peter's dagger sheath disappears after being pushed off the sails.
Continuity mistake: After Peter Pan's dagger was thrown away, the dagger is back in its sheath.
Answer: They never officially confirmed; but it was likely castor oil or morphine. Both were used around this time period as a common "medicine" for children.
Cocaine, heroin, and alcohol-based elixirs were also commonplace at that time and considered "safe and effective" for children.
raywest ★