The company's Ankleshwar plant manufactures bulk drugs, the USFDA said in a notice on its website.
The import alert has been issued under 'Import Alert 66-40', which authorises the health regulator "detention without physical examination of drugs from firms which have not met drug GMPs".
Already the company's two plants at Chikalthana and Waluj have been banned from exporting drugs to the US by the US health regulator.
In November 2013, the USFDA had imposed restrictions on import of medicines produced at the company's Chikalthana plant at Aurangabad in Maharashtra.
Wockhardt shares ended at Rs 1,015.60 on BSE, up 0.49 per cent from the previous close.