Carole Radziwill came back with more than just terrible memories following the “Real Housewives of New York” cast’s infamous cruise from hell.

During an appearance on “Page Six TV,” the Bravo personality revealed she and some of her co-stars fell ill over a parasite.

“We all ate something that did not agree with us,” Radziwill, 54, explained. “I think it was a fish because Bethenny [Frankel] and Tinsley [Mortimer] are actually allergic to fish and they didn’t eat the fish, and the rest of us did and we all did come home with a parasite.”

While Radizwill has since received a clean bill of health, the miracles of modern medicine, however, have yet to remedy broken relationships. As the author also explained, her friendship with one-time BFF Frankel, 47, is on the rocks this season.

“Our friendship isn’t over, it’s just not what it was. I’m sort of an idealistic person and I sometimes view people idealistically, when I meet them, and now I just see her a little bit more realistically,” Radziwill said. “I think there were some things that were said that I heard that she had said, that I didn’t think were consistent with someone who was a good friend, and the person I knew her to be. I talked to her about it, and she doesn’t like to be confronted so I don’t know how well it went.”

Though Radziwill teased that viewers will see how the ominous conversation plays out, both she and Frankel returned from the hectic high seas, for the most part, unscathed.

Page Six exclusively reported in February a pleasure cruise the cast boarded in South America caught fire and started sinking.

“They all thought they were going to die and they were hysterical,” an insider shared. “Bethenny, Ramona [Singer] and Dorinda [Medley] were soaked and screaming hysterically, Carole and Tinsley were literally throwing up from seasickness. They were far out to sea and they thought they were going down like the Titanic.”

The 10th season of the “Real Housewives of New York” premieres Wednesday at 9 p.m. on Bravo.