Prescription drug

Where is Robinia Pseudoacacia Pollen made?

2 companies sell it under their own name. None of their labels names the factory.

Companies and their factories

Company on the labelFactoryWhereLast FDA inspection
Allergy Laboratories, Inc. Black Locust Pollen1 g per 20 mL · NDC 54575-974The label doesn't name the factory. Plants this company names for other drugs
Nelco Laboratories, Inc. Black Locust0.05 g per 1 mL, 0.1 g per 1 mL, 10000 [PNU] per 1 mL, 20000 [PNU] per 1 mL, 40000 [PNU] per 1 mL · NDC 36987-2738, 36987-2739, 36987-2740 +5The label doesn't name the factory. Plants this company names for other drugs