Molybdenum is
an essential element for nature in both organic and inorganic environments. It is present in more than
50 enzymes that catalyze very important redox reactions for the majority of the living organisms and for the entire
biogeochemical cycle of nitrogen. Biocompatibility of this metal within various chemical combinations motivated the
investigation of eventual useful biological properties. In this revi
ew article, molybdenum compounds are explored in
order to highlight their applications in biology and medicine as promising antitumor, antibacterial, antiviral and antioxidant
agents.