TAMPA, Fla. -

A Tampa woman on trial in the slaying of her two teenage children yelled, "Liar!" at a psychiatrist who was testifying that he had told her not to drink while taking drugs to control her bipolar disorder.

Julie Schenecker lashed out Friday at Dr. Demian Obregon after he said he had warned her that the alcohol-drugs combination could be deadly.

Judge Emmett Battles immediately stopped the trial, ordered the jury out and admonished Schenecker. He told her she would be restrained if she had another outburst.

Defense attorneys have said Schenecker suffered from bipolar disorder and depression when she killed her teenagers in 2011. Obregon treated Schenecker and is a key defense witness to establish her mental state. She has pleaded not guilty by reason of insanity.