"Ronnie was admitted to an Orlando-area hospital late Saturday night," the representative told People magazine.
The 27-year-old muscle-bound personality is "in a lot of pain and is expected to remain there for several days," the unnamed rep said.
Longtime on-again, off-again girlfriend Sammi "Sweetheart" Giancola, 26, another former "Jersey Shore" cast member, was traveling to be at his bedside, the magazine said on its website.
Ortiz-Magro was in Orlando to promote his alcohol line, Smush Cocktails, at the Wine and Spirits Wholesalers of America Convention when "he started feeling uncomfortable," his rep said.
Celebrity Families of 2014 [PHOTOS]