Effects of a sulfated polysaccharide isolated from the red seaweed Solieria filiformis on models of nociception and inflammation

► SP-Sf showed antinociceptive action through a peripheral mechanism. ► SP-Sf did not show a significant anti-inflammatory effect. ► SP-Sf did not show significant signs of toxicity when administrated in mice. ► The FT-IR spectra of SP-Sf (F I) showed characteristic of κ-carrageenan.