Posted in products. Zinc Sulfate Written by Top Chem Pharma on 30/09/2021. TopChem has shipped the first quantities of Zinc Sulfate suitable for use in injectable drug product formulations. Previous article New Manufacturing Suite Next article US FDA Audit You might also like Launch of Bretylium Tosylate Bretylium Tosylate ANDA Approved in the US Covid-19 Test Reagent