It is recounted in the short biography of Lord Phagmo Drupa that he cherished the three trainings and abstained entirely from all evil sustenance such as meat. He would not even eat soup seasoned with animal fat. Moreover, when he was poisoned and close to death, he was advised that if he were to drink a cup of beer that had been blessed with mantras he would be cured. But he would not take it and so risked his life.

(Source: FB. p. 82)