The stock plummeted by 11 per cent to Rs 1,146.40 on the BSE.
It tumbled 11 per cent to Rs 1,144.95 at the NSE.
Wockhardt shares had slumped 15 per cent on Friday also.
The observations were made by the USFDA in Form 483, which is issued to firm management at the conclusion of an inspection by its investigator, highlighting any conditions that may constitute violations of the Food Drug and Cosmetic (FD&C) Act and related Acts.
The tablets are in the strengths of 250 mg (45,022 bottles) and 500 mg (17,533 bottles).
