Medicine

Medicine has been used by lots of the tribes throughout pretty much all the books. Examples of medicine:

Swordleaf Root: Stated by Qibli in Moon Rising, Swordleaf Root helps with headaches, as Queen Thorn took it herself.

RainWing Venom: RainWing venom from relatedRainWings cancels the destroying effect, turning the venom into a gloppy black mess.

Brightsting Cactus: The juice of it heals the venom of SandWing tail barbs. This was revealed by Blaze in The Hidden Kingdom.

Tranquilizer Darts: Used to keep RainWing patients sleeping.

Smokeberries: Kinkajou stated that these berries gave her the weirdest hallucinations.

Other Examples:

Peril used her firescales to burn the venom of a dragonbite viper out of Clay's leg.