Mike and Jan Rozga look at family photos on display in their home, Sunday, March 27, 2011, in Indianola, Iowa. The Rozga's son David killed himself last summer after dabbling with a product known as ... more 
Mike and Jan Rozga look at family photos on display in their home, Sunday, March 27, 2011, in Indianola, Iowa. The Rozga's son David killed himself last summer after dabbling with a product known as K2. Synthetic substances like K2 that mimic marijuana, cocaine and other illegal drugs are making users across the nation seriously ill, causing seizures and hallucinations so intense that thousands of them seek help at emergency rooms. less 
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Associated Press | Photo By Charlie Neibergall
Wed, Apr 6, 2011 7:14 AM EDT