The singer fell ill at her rented house on the island, forcing friends to call an ambulance, reports The Sun.
It is under three weeks since Winehouse was last taken to hospital in St. Lucia, on May 2.
No details were given as to why Winehouse was taken to the hospital on this occasion. She has since been discharged.
In other Winehouse news, a warts-and-all documentary about the singer's time in St. Lucia is set to hit television screens later this year. Saving Amy was filmed by Daphne Barak, who recently spent time with Winehouse and her family on the island, according to the singer's MySpace page.
For more on Amy Winehouse, check out her NME.com page.
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