In "The Seven-Per-Cent Solution", this literary character is treated by Sigmund Freud for drug addiction
[DOC] [TLE] The Seven-Per-Cent Solution (1976) - IMDb [PAR] Adventure ... To treat his friend's cocaine induced delusions, Watson lures 
Sherlock ... Alan Arkin and Nicol Williamson in The Seven-Per-Cent Solution (
1976) Nicol ..... to Austria to meet Sigmund Freud, who can help him with his drug 
addiction.