You know, I had a professor with your condition, but it had nothing to do with magic. It was plain stomach ulcers. Milk was the only thing that helped.
10 seconds sound clip from the The Flight of Dragons movie soundboard.
You can hear this line at 00:33:43.417 in the Blu-ray version of the movie.
Quote context
[...]
- Sir, I'm no warrior. I'm awkward, clumsy.
- Not anymore my son, for I believe you have found your time and place.
- You are too modest, Sir Peter.
- No, no, my dear. Cider makes evil magic in the stomach.
- Milk? Really? Alas, Gorbash has devoured every cow with in 20 miles.
- Oh father, waist a little magic and change the cider.
- Kala... Bovinamo! To the quest!
[...]