'Floribama Shore' Star Kirk Medas Dead at 33

5:25 PM PT -- "Floribama Shore" Exec. Producer SallyAnn Salsano and production co. 495 Productions are reacting to the passing of cast member Kirk Medas, telling TMZ ... “We are heartbroken over the passing of Kirk Medas, a beloved member of our Floribama Shore family. Kirk brought light, laughter, and loyalty to every moment—both on screen and off. He was more than a cast member; he was family."

They continue, "Our hearts are with his loved ones, friends, and everyone who had the privilege of knowing him. We will forever cherish the joy and memories he gave us.”

"Floribama Shore" star Kirk Medas has died after spending nearly two weeks hospitalized in an intensive care unit.

His family confirmed to TMZ ... Kirk died Friday. His father tells us doctors say Kirk died from liver failure.

As we reported ... Kirk was put on a ventilator in a Miami-area hospital and had been fighting for his life.

Kirk's family previously announced he was fighting necrotizing pancreatitis, needed a machine to breathe, and was in a coma.

Fans of reality television will recognize Kirk from the "Jersey Shore" spin-off on which he starred with Jeremiah Buoni, Codi Butts, Aimee Hall, Nilsa Prowant, Candace Rice, Gus Smyrnios and Kortni Gilson -- though only on the first three seasons for the latter.

Before he passed his former costar and pal, Nilsa, took to Instagram to show love for Kirk ... saying he was there for her over the past eight years of her life -- even walking her mom down the aisle. She added she loves Kirk and his family a lot.

Kirk was 33.