Kym Valentine, star of TV drama series Neighbours, has been hospitalised because of a respiratory problem but will return on the set on Monday, a representative for the show said.

Valentine was admitted in a hospital on Tuesday and was told to stay there until Saturday.

Reports from News Limited states that she has a blood clot on her lung.

However, the spokesman for the soap said that Valentine will be joining the rest of the Neghbours cast when they come back from this week's scheduled production break on Monday.

"We're astounded as well that she'll be well enough to go back to work on Monday," the spokesman told AAP.

Valentine plays Libby Kennedy in the Network Ten show.

Back in 2008, the actress was forced to take a month off from filming after she suffered a collapsed lung during a long haul flight from the US to Melbourne.

The spokesman added that her current condition is not related to that.