Zeni Medical ZeniCOL Ag 2" x 2" collagen dressing with silver.ZeniCOL Ag Collagen Dressing with Silver is an advanced wound care dressing made ofanimal derived collagen, sodium alginate, carboxymethylcellulose (CMC),ethylenediamineteraacetic acid (EDTA) and silver chloride. The topically applied wound dressing transforms into a soft gel sheet when in contact with wound exudate to maintain a moist wound environment that aids in the formation of granulation tissue and epithelialization and removes zinc to inhibit the activity of MMPs. The silver chloride in the dressing is an effective antimicrobial intended to prevent colonization of the dressing.