released Monday what it characterized as "strong" fourth-quarter performance figures, including sales of $35 million that were 90% higher than in the year-ago period.

The online pharmacy, based in Bellevue, Wash., also said its unaudited gross margin for the quarter was more than 13%, compared with a negative 16.3% in the year-ago period.

drugstore.com also said it added 257,000 new customers in the quarter.

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The company did not provide guidance on its earnings outlook, but seven analysts polled by

First Call/Thomson Financial

are expecting the company to lose 55 cents in the quarter, lower than the 84 cents it lost in the year-ago period.

Shares of drugstore.com leaped 75 cents, or 60% to $2 in recent