Stephen Dank, the architect of the Essendon injecting program, says he hopes his impending court cases help to clear the names of the 34 past and present players banned for being administered an illegal drug.

Dank insists the players were not given the banned peptide thymosin beta-4, but rather the legal thymomodulin, and believes legal action against more than two dozen individuals and organisations will provide new evidence on a saga that is now into its fourth year.

"I feel deeply for the players. I am upset with the decision in respect to the players, in fact very upset and angry," Dank told Fairfax Media.

"We must do what we need to do to get the players off."