The dart is propelled from the gun by compressed gas, and it is stabilized in flight by a tailpiece consisting of a tuft of fibrous material. ... With the pressure released, the compressed gas pushes the solution out of the syringe and into the target (see diagrams from Veterinary Technician).

How long does a tranquilizer dart take to work?

The animal won't have dreams, but they'll be completely unaware. Within 15 minutes, they're fully asleep. Veterinarians might have only 30 minutes before the elephant wakes up, so they work quickly.

How does tranquilizer work?

Tranquilizers work on your central nervous system and brain. They slow down brain activity and promote a state of relaxation and calm. Specifically, sedatives produce a neurotransmitter called GABA, which is responsible for slowing down the brain.