Prescription drug

Where is Populus Alba Pollen and Populus Nigra Pollen 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
Antigen Laboratories, Inc. Poplar Mixture0.025 g per 1 mL · NDC 49288-0397The label doesn't name the factory. Plants this company names for other drugs