A child was taken to Southland Hospital after it was feared they had eaten toxic tutu berries.
The native plant, which contains the toxin tutin, can cause vomiting, tremors and seizures.
A St John spokesperson said a child was flown to Southland Hospital just before 8pm yesterday from the Milford Sound area.
They said the child was taken as a precaution.
In 2008 22 people were poisoned by honeycomb, which contains the tutin toxin produced when bees gather honeydew made by an insect on tutu bushes.