NEW YORK (AP) -- Drugmaker Glenmark Generics says it is recalling seven lots of birth control pills because in some packages, the pills were in the wrong order.

Glenmark says the pills were distributed between Sept. 21 and Dec. 30.

In some packages, blisters of pills were rotated so they were not in the proper sequence. The error also made the lot number and expiration date harder to see, and company says the recall applies to any blister package for which the lot number and expiration date are not visible.

A month's supply of birth control pills contains three different medications that are each taken one a day for a week, and a week's worth of inert pills. If the pills are taken out of order, they may not work.