The present invention relates to a new crystalline phase of (3S,3S’) 4,4’-disulfanediylbis(3-aminobutane 1-sulfonic acid) (ABSD) with L-lysine and its use, particularly in the pharmaceutical industry, and to processes for preparation thereof. The invention is also directed to pharmaceutical compositions containing at least one crystalline phase of (3S,3S’) 4,4’-disulfanediylbis(3-aminobutane 1-sulfonic acid) (ABSD) with L-lysine and to the therapeutic or prophylactic use of such crystalline phase and compositions comprising the same.本發明係關於一種(3S,3S')4,4'-二硫二基雙(3-胺基丁烷1-磺酸)(ABSD)與L-離胺酸之新穎結晶相及其尤其在醫藥工業方面之用途,及係關於其之製備方法。本發明亦關於包含至少一種(3S,3S')4,4'-二硫二基雙(3-胺基丁烷1-磺酸)(ABSD)與L-離胺酸之結晶相之醫藥組合物及係關於該結晶相及包含該結晶相之組合物之治療或預防用途。