Jason Weber over at Occupy HLN has done his homework...and has done an outstanding job. 

A+, Jason!

Purple Drank or Lean is a cocktail that is created by mixing Robitussin or other over-the-counter cough medicines with — yes — Skittles and Arizona Watermelon Juice,the same flavor of tea Trayvon Martin was carrying that night....

It is unknown whether the autopsy performed on Trayvon Martin looked for or found elevated levels of cough syrup in his blood, but messages on social media seem to offer a clue as to whether or not Trayvon was manufacturing Purple Drank:

Things become even more clear when you look at the accurate timeline of events that took place the night of the incident.
Let me be extremely clear here.  Although there is ample evidence that Trayvon Martin was using Skittles and Arizona Iced Tea to make Purple Drank / Lean, I’m merely offering an explanation as to why he may have been paranoid and agitated.  I’m not saying that this should have ended in a tragedy.  But I am giving you information HLN and the media will not give you, and hopefully offering some insight as to why Trayvon Martin acted the way he did.
As Weber states, you will never hear about this from the perps over at the government-controlled-media-complex...they are too invested in inciting the next riot.