Shanon and William Schmidtknecht, of Poynette, say their 22-year-old son Cole was told the cost had jumped from $66 to $539 out-of-pocket. He tried to manage his condition with his rescue inhaler but suffered a fatal asthma attack days later.

After a $500 price rise for asthma meds, Cole Schmidtknecht couldn't afford to refill his prescription.

A Wisconsin couple is suing Walgreens and Optum Rx in connection to their adult son's death. The lawsuit alleges the pharmacy benefits management company violated state law by raising the cost of the medication without a valid medical reason and failing to provide 30 days' advance notice of drug price increases.