Natco Pharma failed to maintain cleanliness and sterilise equipment and utensils at appropriate intervals at its Telangana-based plant, as per the US’ health regulator USFDA. In a warning letter to the company, the USFDA said its investigators observed various violations at the finished pharmaceuticals plant located at Kothur Village in Telangana, which it inspected from 9 to 18 October, 2023.