Ronald Ortiz-Magro, formerly of the MTV reality series "Jersey Shore," is being treated at a Florida hospital for kidney stones, his representative said.

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"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.