Druggie "drug addict" is recorded by 1968. Phrase a drug on (or in) the market "thing which has lost its value and is no longer wanted" (mid-17c.) is of doubtful connection and may be a different word, perhaps a play on drag, which was sometimes written drug c. 1240-1800....
Is "drug" past tense for "drag"? What is the present perfect tense of "did"? What is the past perfect tense of is? What are the forms of past perfect tense? What is the present perfect tense of "caught"? What is the past perfect tense of skip?
Dragracing (1947), is said to be from thieves' slangdrag"automobile" (1935), perhaps ultimately from slang sense of "wagon, buggy" (1755), because a horse would drag it. By 1851 this was transferred to "street," as in the phrasemain drag(which some propose as the source of the raci...
https://doi.org/10.1075/jlac.1.1.04harHardaker, Claire. 2013. "Uh...not to be nitpicky,,,but...the past tense of drag is dragged, not drug": An overview of trolling strategies. Journal of Language Aggression and Conflict 1(1). 57-86....