The AFL has issued infraction notices to 34 past and present Essendon players for the the use of banned peptides in 2012.
AFL general counsel Andrew Dillon issued the notices late on Friday in relation to use of the banned peptide thymosin beta-4.
It follows the players being placed on the Anti-Doping Rule Violation Panel register of findings on Thursday.
An AFL tribunal directions hearing, chaired by former County Court judge David Jones, is proposed for next week.
The identities of the 34 players remains confidential.