19th March 2010

                          RECKITT BENCKISER GROUP PLC                          

      Reckitt Benckiser Buys Back Remaining Rights to Suboxone & Subutex       

Reckitt Benckiser Group plc (RB) today announces that it is buying back the
sales and marketing rights to the buprenorphine-containing products Suboxone®,
Subutex® and Temgesic®* from Merck & Co., Inc.** for approximately £100
million. The rights apply to a number of countries in Europe and the rest of
the world, and were due to revert to RB mid-2012. With this acquisition the
majority will now revert two years earlier, starting 1 July 2010. The
incremental net revenue to RB associated with these rights would have been
approximately £80 million for full year 2009, if RB had owned them.

RB currently has management control of the sales and marketing of these
products in only two sizeable markets, namely the US and Australia. With this
purchase, RB will have a wholly-owned international franchise for Suboxone and
Subutex.

RB and Merck''s MSD will work closely to ensure a smooth transition in the best
interests of patients and healthcare professionals. RB aims to retain as many
as possible of the dedicated commercial staff involved in the business, in
conformity with applicable local laws. The company will also be investing in
additional sales and marketing capability.

Given the current scale of the business outside of the US and the investment
needed, the impact of this transaction on RB''s financial results in 2010 will
be limited.

                                    * ENDS -                                   
   
Notes:

* Suboxone® and Subutex® are opioid dependence treatments and Temgesic® is an
analgesic.
** (through an affiliate, "MSD"). Merck & Co., Inc. was previously known as
Schering-Plough Corporation



For further information, please contact:

Reckitt Benckiser                                                              
Joanna Speed               Investor Relations        +44 (0)1753 217800        
Andraea Dawson-Shepherd    Media                                               
                                                                               
Brunswick (Financial PR)                                                  
Susan Gilchrist                                      +44 (0)20 7404 5959       
David Litterick                                                                
                                                                               
Merck                                                                          
Joe Romanelli              Investor Relations        +1 908 423 5088           
Carol Ferguson             Investor Relations        +1 908 423 4465           
Monique Mols               Media                     +31 (0) 412 66 5440       

RECKITT BENCKISER GROUP PLC