One Flew Over the Cuckoo's Nest Chapter 19
In the lunch line one day, an Acute named Sefelt starts having convulsions. One of the aides crams a stick into his mouth keep him from biting off his tongue and gets the Big Nurse to come over. She immediately reprimands the unconscious man and the rest of the men that the reason this happened is that Sefelt has been dodging his medication. Fredrickson steps forward to defend Sefelt. He tells her that he's been taking Sefelt's medication along with his own, because he's terrified of having a fit. The Big Nurse cuts him down by treating him like a little boy.
After they've gone, McMurphy asks why Sefelt doesn't take his pills. Fredrickson explains that it rots his gums. McMurphy is starting to get a haggard, haunted look on his face.