Trimethoprim lactate is a bacteriostatic antibiotic and an orally active dihydrofolate reductase inhibitor. Trimethoprim lactate is active against a wide range of Gram-positive and Gram-negative aerobic bacteria . Trimethoprim lactate has the potential for the research of urinary tract infections, Shigellosis and Pneumocystis pneumonia. Trimethoprim lactate can inhibit infection of Influenza A virus in chick embryo when combinated with zinc .