Paltothyreus tarsatus F. extracts showed anticonvulsant effects in laboratory mice. Chemical examination of Paltothyreus tarsatus revealed the presence of alkyl sulphides (8.5%), ketones (9%), fatty acids (50%), small amounts of alkanes, alkenes and sterol. Constituents were analysed by gas chromatography. Tentative identification of the unknown was confirmed by comparison of its mass spectrometry and its gas chromatography retention time with those of an authentic sample and by co-injection.