US funnyman Jack Black has raised concerns for his health, after admitting to enjoying an ecstasy-fuelled "rampage" in New Zealand.

The 26-year-old actor, who was taking a break from shooting scenes for new movie King Kong at the time, proudly admits his love for the drug.

He says, "I had a little extra time off. I did some ecstasy and me and another member of the cast - who shall remain nameless - went on a rampage."