I remember it being a children's storybook I read when I was little, and I recall being pretty traumatized by it at the time.
The plot was about a kid who refused to take their medicine, so someone put the pill inside their molar, forcing them to constantly taste the bitter medicine as it slowly dissolved.
Even looking back now, that sounds absolutely horrific. Does anyone know what story this was? Or was it just some fever dream I had after taking medicine?