Transaction in Own Shares

GlaxoSmithKline PLC
29 September 2004

Please find below an amendment to RNS announcement Number 2905D made on the 23rd
September 2004 which now includes the number of shares the company holds in
Treasury.


                              GlaxoSmithKline PLC


GlaxoSmithKline plc (the "Company") announces that in accordance with the
authority granted by shareholders at the Company's Annual General Meeting on 17
May 2004 it purchased 420,000 of it's Ordinary shares of 25 pence each ("shares
") on 23 September 2004 at a price of 1185.5 pence per share.

The Company intends to hold these shares in Treasury.

Following the purchase of these shares, the Company holds 46,343,000 of it's
shares in Treasury and has 5,888,706,248 shares in issue (excluding Treasury
shares).

This announcement does not constitute, or form part of, an offer or any
solicitation of an offer to purchase or subscribe for securities in any
jurisdiction.


                      This information is provided by RNS
            The company news service from the London Stock Exchange