That's pharmacological. From local plant life.
7 seconds sound clip from the Jurassic Park (1993) movie soundboard.
You can hear this line at 00:51:29 in the Blu-ray version of the movie.
Quote context
[...]
- Micro-vesicles. That's interesting.
- Imbalance, disorientation, labored breathing.
- It seems to happen every six weeks or so. Six weeks...
- These are dilated. They are?
- That's pharmacological. From local plant life.
- Yes. We know they're toxic, but the animals don't eat them.
- There's only one way to be positive. I'd have to see the dinosaur's droppings.
[...]