Transaction in Own Shares

GlaxoSmithKline PLC
23 September 2004


                              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  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.



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