The family of a 46-year-old Florida man has filed a wrongful death lawsuit against Panera Bread Co., alleging that the man’s consumption of large quantities of the bakery chain’s caffeinated lemonade beverage led to his cardiac arrest.

The mother, sister and brother of the late Dennis Brown, a Fleming Island resident, filed the legal complaint Dec. 4 in Superior Court in Delaware, where Panera Bread is registered. 

“Defendants knew or should have known that the defective and unreasonably dangerous design of Panera Charged Lemonade could cause catastrophic injuries, including … heart arrhythmias, cardiac arrest and/or death,” the lawsuit states.