Janssen Pharmaceutica

, a unit of

Johnson & Johnson

(JNJ) - Get Report

, terminated their U.S. co-promotion agreement for the antidepressant drug Vestra.

The brief statement didn't provide any reasons, but said Pharmacia is working with the

Food and Drug Administration

to finalize approval of Vestra for treating depression. The Peapack, N.J., company, which currently markets the product in 18 countries under various trade names, is also conducting an additional clinical study to support the FDA application.

Shares of Pharmacia recently fell $1.25, or 2.1%, to $58.38, while shares of Johnson & Johnson were down $1.13, or 1.2%, to $96.63 in

New York Stock Exchange