Prescription drug

Where is Vitamin C, Vitamin B12, Vitamin K Mk7, Folate made?

1 company sell it under their own name. None of their labels names the factory.

Companies and their factories

Company on the labelFactoryWhereLast FDA inspection
Vivera Pharmaceuticals, Inc.4 ingredients · NDC 72380-916The label doesn't name the factory. Plants this company names for other drugs