From a reliable source. That would be a dentist. The Ancient Egyptians had two main cures for toothache way back around 1500 BCE.
Cure 1: Oil of Cloves (still used today)
Cure 2: Cut a live mouse in half, longways. Place one half in each cheek and ta da. Toothache – and, I’d argue half your stomach contents – gone. (may not be used much today)