HYPERICIN-PVP COMPLEX WITH HIGH HYPERICIN CONTENT

摘要

The invention relates to a complex that consists of hypericin or a hypericin salt and polyvinyl pyrrolidone (PVP), the average mass fraction of hypericin or hypericin salt in the entire complex being higher than 6% by weight. The invention further relates to a process for preparing said hypericin-PVP complex, according to which process a mixture of hypericin and PVP is heated to a temperature above the glass transition temperature of the PVP used.