It is not known whether these effects on the reproductive organs of animals are associated with impaired fertility in premenopausal women. Arimidex Precautions: Before starting Arimidex treatment, make sure you tell your doctor about any other medications you are taking including over-the-counter drugs, vitamins, or herbal remedies. Following administration of single oral dose of radiolabeled exemestane, the elimination of drug-related products was essentially complete within week. Exemestane was not mutagenic in bacteria Ames test or genotoxic in V79 Chinese hamster arimidex ohne rx cells, rat hepatocytes, or the mouse micronucleus assay. Do not take it in larger amounts or for longer than recommended.