Rep. Anthony Weiner’s Queens office was sent a package yesterday containing white powder and a threatening note complaining about the health-care overhaul, authorities said.

The FBI confirmed that Weiner (D-Brooklyn/Queens) received a letter that “could be interpreted as threatening.”

At least 10 members of Congress have reported threats — including obscenity-laced phone messages — since the bill was passed on Sunday.

“The NYPD was immediately alerted and have responded appropriately by sending a hazmat team,” Weiner said.

The envelope with the powder was discovered around 3 p.m. at the lawmaker’s Kew Gardens office, which was closed as a precaution. Nine staffers were decontaminated and sent home, officials said.