no, but whatever Eden did do, whether it was power related or simply the power of encouragement, she helped get Issac past his need for shooting up while painting... it will be interesting as to whether or not they show Issac go through the emotional stages of withdrawal or not... maybe that's too heavy for the plotline though
I think Eden helped him get clean, but he didn't seem to think he could use his power until Hiro, Ando, and Issac had that moment with the unfinished comic. It's a breakthrough for Issac when he relized that he didn't need the drugs.
I wondered how they were going to lead Issac there. I thought it would have been after Peter used the power without getting high.