| Antiviral polysaccharide | Organism | Virus |
| Carrageenan | Red alga, Gigartina skottsbergii | Influenza virus, DENV, HSV-1, HSV-2, HPV, HRV, HIV |
| Galactan | Red algae, Callophyllis variegate, Agardhiella tenera, Schizymenia binderi, Cryptonemia crenulata | HSV-1, HSV-2, HIV-1, HIV-2, DENV, HAV |
| Alginate | Brown algae, Laminaria hyperborea, Laminaria digitata, Laminaria japonica, Ascophyllum nodosum, Macrocystis pyrifera | HIV, IAV, HBV |
| Fucan | Brown algae, Adenocytis utricularis, Undaria pinnatifida, Stoechospermum marginatum, Cystoseira indica, Cladosiphon okamuranus, Fucus vesiculosus | HSV-1, HSV-2, HCMV, VSV, Sindbis virus, HIV-1 |
| Laminaran | Brown algae, Fucus vesiculosus, Saccharina longicruris, Ascophyllum nodosum | HIV
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| Naviculan | Diatom, Navicula directa | HSV-1, HSV-2 |
| p-KG03 | Microalga, Gyrodinium impudicum | EMCV, influenza A virus |
| A1 and A2 | Microalga, Cochlodinium polykrikoides | Influenza A and B viruses, RSV-A, RSV-B, parainfluenza-2 |
| Calcium spirulan | Blue-green alga, Arthrospira platensis | HSV-1, measles, mumps, influenza, polio, Coxsackie, HIV-1, HCMV |
| Nostaflan | Blue-green alga, Nostoc flagelliforme | HSV-1, HSV-2, influenza A virus, human cytomegalovirus |
| Sea algae extract | Red alga, Schizymenia pacifica | HIV, AMV, RMLV |
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