Table 6.

Examples illustrating common reasons behind the misclassification of tweets.

Post	Classified as	Issues
geez this vyvanse makes me talk a mile a minute haha	non-ADR	ambiguous, short
ok vyvanse, it's 4:30am. at this point ima just throw you a big **** you	non-ADR	ambiguous reference to ADR (sleeplessness)
this cipro is totally “killing” my tummy ..hiks..	non-ADR	non-standard description of ADR
i don't know if vyvanse was a good idea #nosleep	non-ADR	ambiguous, non-standard description of ADR
#restlesslegs #quetiapine	non-ADR	short, non-standard terms
had a dream my eyes got burnt out of my head, thank you trazodone	non-ADR	sarcasm/contradictory statement
popped a vyvanse, im tweaked. whoop	non-ADR	ambiguous, short, non-standard terms
fluexetine and quet zombified me..ah, the meds merrygorount #bipolar	non-ADR	spelling mistakes, non-standard terms
wtf Humira, ‘clears your skin but may cause u cancer or heart failure smh’…	ADR	generic statement about ADR, no reference to personal experience
shorter xarelto advertisements: if you take it you may “bleed to death”	ADR	general ADR statement (reference to advertisement)