The five additional players are Shaun Payne, Brian Carney, Marcus Horan, Donnacha Ryan and Niall Ronan.
The good news for Munster is that prop Horan could force his way back into the team to take on Leinster, and David Wallace is also on the road to full fitness after taking a heavy knock to his face during the latter stages at Kingsholm.
Horan missed the Gloucester game, pulling out of the side less than an hour before kick-off due to a back spasm. Tony Buckley took over at loosehead prop.
Both Horan and Wallace were at the UL Bowl on Tuesday morning for squad training and while neither took a full part in the session, their injuries are, according to Declan Kidney, healing satisfactorally enough to allow them be considered for the weekend's interprovincial clash.
"With Marcus and the nature of his knock, it can be difficult to say how things pan out and although he didn't train today, he is improving and hopefully he will able to train Thursday," the Munster coach explained.
"In David's case, he took a heavy facial knock on Saturday, but he did some light training today and again like Marcus, we will know a bit more on Thursday and would expect both to be in the mix for selection."
Munster are a full 11 points adrift of Leinster at the business end of the Magners League table, but if they can garner a win at the RDS and another in their re-fixed game away to Ulster on April 29, they could yet have a say in the destination of the league title.
Forwards (15) - John Hayes, Marcus Horan, Tony Buckley, Federico Pucciariello, Jerry Flannery, Frankie Sheahan, Paul O'Connell (capt), Donncha O'Callaghan, Donnacha Ryan, Mick O'Driscoll, Alan Quinlan, David Wallace, Denis Leamy, Anthony Foley, Niall Ronan.