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.

A Wisconsin couple are suing Walgreens and Optum Rx over their son's death, claiming he was unable to afford a sudden spike of cost in his asthma medication. The suit was submitted in federal court by William and Shanon Schmidtknecht of Poynette, Wis. on Jan. 21, a year to the date that their son, 22-year-old Cole Schmidtknecht, died.

The parents of Cole Schmidtknecht are suing Walgreens and a pharmacy benefits management company called Optum Rx.

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.