Products: Case Studies



Our primary focus is to develop new medical technologies within the wound care industry. One of Greystone’s broadly-enabling technologies is a synthetic composition of polyhydrated ionogens known as “PHI™.” 


    - PHI down-regulates the production of matrix metalloproteinases, or MMPs, which are known to cause up to 80% of chronic wounds


    - PHI (Polyhydrated Ionogen) in synthesized form was founded from a botanical red oak bark


    - PHI is highly efficacious in the treatment of a) Diabetics foot ulcers, b) Pressure ulcers,  c) Venous stasis ulcers, and Burns.



The following 4 cases demonstrate the effectiveness of PHI dressings when applied to hard to heal wounds.