"I don't care what anyone says. I know that I'm a damn good actress," she continued. "And I know that in my past I was young and irresponsible, but that's what growing up is. You learn from your mistakes."
Lohan appeared on Vanity Fair's September cover and in the magazine, lounging on the beach, evoking old Hollywood glamour. Her problems, however, are firmly in the camp of today's tabloid-prone celebrities.
A probation report released in July revealed that Lohan has prescriptions for the antidepressants Zoloft and Trazodone; Adderall, a stimulant used to control attention-deficit hyperactivity disorder; the acid reflux medicine Nexium and the powerful painkiller Dilaudid.
"I've never abused prescription drugs," Lohan said.
"I never have, never in my life," she continued. "I have no desire to. That's not who I am. I've admitted to the things that I've done -- to, you know, dabbling in certain things and trying things 'cause I was young and curious and thought it was like, OK, 'cause other people were doing it and other people put it in front of me. And I see what happened in my life because of it."
Lohan also insisted that despite multiple DUI arrests and rehab stays, she's not an alcoholic.
"If I were the alcoholic everyone says I am, then putting a [SCRAM] bracelet on [to measure alcohol in one's perspiration] would have ended me up in detox, in the emergency room, because I would have had to come down from all the things that people say I'm taking and my father says I'm taking -- so that says something, because I was fine," she explained.