This document contains abstracts from the Brazilian Journal of Pharmaceutical Sciences that summarize research related to adverse drug reactions associated with various medications. The abstracts cover topics such as the adverse reactions reported for new oral anticoagulants, the risk of atrioventricular block associated with the first dose of fingolimod, and the importance of MRI-based diagnosis of progressive multifocal leukoencephalopathy associated with natalizumab in asymptomatic cases. Other abstracts discuss risks of pancreatitis, tuberculosis, and various psychological and neurological adverse reactions associated with therapies targeting TNF-alpha, serotonin, GLP-1, and other substances.