Kelsey Grammer, the star of TV show Frasier, is back in hospital two months after suffering a heart attack.
The 53-year-old actor checked into a New York hospital over the weekend after complaining of feeling faint.
His publicist said his condition was not life-threatening and the hospital visit was simply a precaution.
"Kelsey was feeling a little faint yesterday and went to the hospital," Stan Rosenfield said yesterday.
"His doctor is changing the medication and they will monitor him overnight."
Mr Rosenfield added that it was possible the medication the actor had been taking led to his symptoms.
Grammer suffered a heart attack two months ago while in Hawaii with his wife.
The actor later blamed his poor health on the cancelling of his new show, Back To You, by the Fox television network.