**16. Conclusions**

The results in this review emphasized the significance of the probable healing function of natural bioactive products purified from cyanobacteria strains, for instance, antibacterial, antitumor, protease inhibition activity, and antiviral effects, and highlighted the necessity to restart discovering natural biological sources. However, system biology for metabolite purification, characterization, and valuation in cyanobacterial bioactive compounds that have not arrived in the clinical trials so far.
