* FTSEurofirst 300 falls 1.1 pct; fourth week of losses

* Drugmakers suffer on bleak outlook

* Financials slip; uncertain corporate earnings weigh

* Energy shares track weaker oil prices

By Brian Gorman

LONDON, July 10 (Reuters) - European shared closed lower on Friday, notching up a fourth straight week of losses on worries about corporate earnings and the pace of economic recovery, with drugmakers and banks suffering most.

The FTSEurofirst 300 index of top European shares fell 1.1 percent to 814.29 points, its lowest close since April 28. Over the week, it fell 3.4 percent, but is still up more than 26 percent from the record low it hit on March 9.

Drugmakers were among the biggest losers. GlaxoSmithKline (GSK.L: Quote, Profile, Research), Novartis (NOVN.VX: Quote, Profile, Research), Shire (SHP.L: Quote, Profile, Research), AstraZeneca (AZN.L: Quote, Profile, Research), Roche (ROG.VX: Quote, Profile, Research) and Sanofi-Aventis (SASY.PA: Quote, Profile, Research) fell between 1.1 and 2.4 percent.