In case anyone is interested, listed below are two references for recent peer-reviewed studies on what I presume corresponds Vitrogro (they don't seem to be using the brand name within the papers, but in my experience this is not unusual). You might find the full text of the papers is behind a paywall, but the abstracts should be available via the links. The 2011 paper makes reference to several clinical studies on the topical use of growth factors which perhaps might be relevant to the safety of Vitrogro (it contains part of a growth factor in relatively low concentration).
1. A pre-clinical functional assessment of an acellular scaffold intended for the treatment of hard-to-heal wounds.
Shooter GK, Van Lonkhuyzen DR, Croll TI, Cao Y, Xie Y, Broadbent JA, Stupar D, Lynam EC, Upton Z.
Int Wound J. 2013 Apr 5. doi: 10.1111/iwj.12073. [Epub ahead of print] http://www.ncbi.nlm.nih.gov/pubmed/23556541
2. Human pilot studies reveal the potential of a vitronectin: growth factor complex as a treatment for chronic wounds.
