In late April, J&J's McNeil unit recalled a variety of children's and adult over-the-counter medicines due to numerous manufacturing problems at its Fort Washington, Pa. plant.
The Food and Drug Administration is looking into reports of complications with J&J products, though the agency has not directly linked any medical problem to the recalled medicines.
The company said in a release it has not decided when to resume operations at the plant, which was shut down in May.
A spokeswoman declined to provide further information
Products made at the plant generated about $650 million in sales in recent years. The New Brunswick, N.J.-based company reported total sales of $61.9 billion last year.
J&J has long enjoyed a sterling reputation for safety, earned in the 1980s for quickly pulling bottles of Tylenol that had been tainted with cyanide.
J&J had its sales force remove 264,000 Tylenol bottles from store shelves and consumers were urged to return any Tylenol they had for a safe bottle.