Last we heard, Lindsay Lohan was having a bit of a rough go in rehab minus her Adderall. But it seems the troubled starlet may have had much more serious drug problems...

According to Star Magazine, David “DJ” Joseph, a man claiming to be LiLo’s former drug dealer, has admitted that he doesn’t believe the actress’ 90-day, court-ordered treatment will make any difference. He said:

“Lindsay still wants to party... But she feels going to rehab saves face in the eyes of the public.”

Well, it was either rehab or prison stripes, so we’re not sure that’s exactly right, DJ. But ok...

He then continued to say that Lindsay has a particular penchant for cocaine, having used it more times than she revealed during her interview with Piers Morgan:

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[Image via WENN.]