A caller, believed to be Baldwin's daughter, summoned the ambulance to the Emmy winner's West Side Manhattan apartment, saying in a 911 call that the actor appeared to be "unresponsive, " according to police sources and published reports.
Baldwin's publicist issued a statement this morning, calling it "a misunderstanding on one person's part." The statement said Baldwin was "quickly released," is "completely fine and will be at work" on Thursday.
Video: Baldwin talks about his personal life on "60 Minutes"
A law enforcement official, who spoke to The Associated Press on condition of anonymity because that person wasn't authorized to speak publicly, said Baldwin and his young daughter had argued and she told 911 he had threatened to take pills.
Baldwin was examined at Lenox Hill Hospital, where he remained for more than an hour before being released.
In 2008, Baldwin blamed a bitter custody battle with ex-wife Kim Basinger in part for the stress he was feeling when he berated their daughter, Ireland, in a phone message.
In the message, Baldwin called Ireland, now 14, a "rude, thoughtless little pig." He was apparently upset that she had missed his phone call. Baldwin said he apologized to Ireland. He said the message was wrong and "horrified" him.
In his book, "A Promise to Ourselves," Baldwin railed against the family court system in Los Angeles, offered advice based on his own experience with divorce litigation and talked about how one parent can turn a child against another parent.
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Baldwin, who is slated to co-host the March 7 Academy Awards ceremony with actor Steve Martin, also stars in the big-screen romantic comedy "It's Complicated" with Martin and Oscar nominee Meryl Streep.
In September, Baldwin won his second straight Emmy as lead actor in a comedy for "30 Rock." Last month, he and "30 Rock" co-star Tina Fey won Screen Actors Guild Award for best acting in a comedy series and he won a Golden Globe Award for best actor in a TV series, comedy or musical.