Vela Pharmaceuticals (2005). „Vela Announces Positive Phase 2 Results for Dextofisopam in Treating Irritable Bowel Syndrome - IBS: Results Show Effects of Dextofisopam Both in Women and in Men“, VelaPharm - News. http://www.velapharm.com/news/press050104.htmlArchivováno 2. 5. 2005 na Wayback Machine.
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Příbalový leták Grandaxinu. www.lekarna.cz [online]. [cit. 2011-12-16]. Dostupné v archivu pořízeném dne 2009-08-31.
Vela Pharmaceuticals (2005). „Vela Announces Positive Phase 2 Results for Dextofisopam in Treating Irritable Bowel Syndrome - IBS: Results Show Effects of Dextofisopam Both in Women and in Men“, VelaPharm - News. http://www.velapharm.com/news/press050104.htmlArchivováno 2. 5. 2005 na Wayback Machine.