Walgreen (WAG) 10-K/A 2014 FY Annual report (amended)

EXHIBIT 31.4

CERTIFICATION

I, Timothy R. McLevish, certify that:

1. I have reviewed this Amendment No. 2 to the annual report on Form 10-K of Walgreen Co.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

/s/    
Timothy R. McLevish Timothy R. McLevish Chief Financial Officer Date: November 20, 2014