The marine organisms are a rich source of varied natural products with unique functionality. A variety of
natural products of new molecular structures with diverse biological activities have been reported from marine flora and
fauna for treatment and/or prevention of human diseases. The present review briefly illustrates current status of marine products
as antiprotozoal agents. The in vitro and in vivo studies of marine algae, invertebrates and micro-organism against
different protozoa parasites are included. The marine products studied, according to international criterions for selection
of more promisory products in the different models reported, demonstrated their potentialities as antiprozoal agents.
Herein, the interest of scientific community to search new alternatives from marine environment has been demonstrated.
Keywords: Algae, anti-protozoal activity, invertebrates, marine products, micro-organism.
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