Earlier today it was believed that Max was being treated for a heart condition. While a source confirms that he does in fact have a heart ailment, Sheen's rep later clarified that he's being kept in the hospital for low birth weight.

Sheen's wife, Brooke Mueller Sheen, gave birth to Max and his twin brother Bob on March 14. Sheen has two daughters with ex-wife Denise Richards.

Sheen's rep went on to say that, despite the hospitalization, Max's condition is not serious.

"The Sheens appreciate the outpouring of concern but have assured everyone that both Bob and Max are fine," the rep offered.