America's premier drugstore, Walgreen Co on Monday said its April sales rose 11.1 percent to $5.3 billion from $4.8 billion same period a year earlier, however shares fell to 0.29 percent.

Its comparable stores sales increase 5.7 percent and comparable store front end sales rises to 8.9 percent. And drugstore sales increased 8.5 percent from 4.0 percent.

Last month, Deerfield- based, Walgreens posted second quarter net profit of $640 million or 65 cents per share from $686 million or 69 cents in the same period a year ago, a 6.7 percent decrease. And revenue increase of 7 percent to $16.5 billion from $15.3 billion in a year earlier.

Shares of Walgreens fell 9 cents to 0.29 percent at $31.44 in the regular trading.