Walgreen

(WAG)

posted a healthy increase in same-store sales in October, driven by its pharmacy operations.

The Deerfield, Ill.-based retailer said sales at stores open more than a year rose 8.1%. Pharmacy sales rose 9% and accounted for 64.2% of total sales for the month. Total sales hit $3.35 billion, up 11.8% from a year ago.

As of Oct. 31, the company operated 4,622 drugstores in 44 states and Puerto Rico, vs. 4,247 a year ago.

In late September, Walgreen reported record revenue and profit for its most recently-completed quarter. During its fourth-quarter ended Aug. 31, the company had income of $327.2 million, or 32 cents a share, vs. $277.1 million, or 27 cents a share, in the year-ago period. That easily beat analysts' expectations.

Shares ended at $36.18 Monday.