This presentation examines the antiviral potential of **Sargassum fluitans** seaweed. It introduces the **Sargassum** genus and the Atlantic sargassum belt, emphasizing its antiviral properties. The study evaluates the in vitro antiviral activity of a hydroalcoholic extract from **Sargassum fluitans** against human viruses of clinical and epidemiological importance, providing experimental evidence of its efficacy.
