Question: What drug is the main ingredient referenced in the "drank" of the song Drank in My Cup?

Related documents: [0]  [DOC] "Drank in My Cup" is a song by American rapper Kirko Bangz. It is taken from his mixtape "Progression 2: A Young Texas Playa". The Sound M.O.B. produced single is his highest charting song to date and has sold 1,000,000 copies digitally. The song uses the word 'drank' a number of times as a clear reference to purple drank, a codeine-promethazine cocktail served in Sprite, a drink symbolic of the H-Town hip-hop scene, classically associated with chopped and screwed music. The song is full of references to this music scene, including the slow, relaxed rhythm of the song. [END] 
[1]  [DOC] Purple drank is a slang term for a concoction which includes a prescription-strength cough syrup used in a manner inconsistent with its labeling, thus making it a recreational drug. The mixture became popular in the hip hop community in the southern United States in the 1990s, originating in Houston. [END]  
Answer: cough syrup
cough syrup