cation 0 to about 90 by weight of a hydrophobic polymer and about 5 to about 99 9 by weight of a solvent in one embodiment of the invention the protective coat comprises a solution comprising about 0 1 to about 1 by weight of a di valent cation about 1 to about 5 by weight of a hydrophobic polymer and about 94 to about 98 9 by weight of a solvent in one embodiment of the invention composition 114 is used as a carrier for a therapeutic agent such as a drug or biologic molecule the use of composition 114 as a drug delivery system improves the efficiency of the wound healing gel in one aspect protective coat 110 is prepared with a salt of silver increasing the antimicrobial properties of the gel in one embodiment the therapeutic agent is selected from the group consisting of antimicrobial agents antibiotics hormones proteins such as calreticulin thrombin prothrombin factor viii and iodine and combinations thereof in one embodiment of the invention the therapeutic agent is preferably iodine in another embodiment of the invention the therapeutic agent is a protein in one embodiment of the invention the cross linkable polyanionic polymer may be a polystyrene sulfonate such as sodium polystyrene sulfonate a polyacrylate such as sodium polyacrylate a polymethacrylate such as sodium polymethacrylate a polyvinyl sulphate such as sodium polyvinyl sulphate a polyphosphate such as sodium polyphosphate iota carrageenan kappa carrageenan gellan gum carboxyl methyl cellulose carboxyl methyl agarose carboxyl methyl dextran carboxyl methyl chitin carboxyl methyl chitosan a polymer modified with a carboxyl methyl group an alginate such as sodium alginate a polymer containing a plurality of carboxylate groups a xanthan gum and combinations thereof preferably the crosslinkable polyanionic polymer is an alginate more preferably sodium alginate preferably the cross.