from the research I did, it says around 1500gm~3000gm, or follow the instructions on the bottle...
As far as how much, I would follow the instructions on the bottle - at least that's what I did. As to when, I would take it like sweetdrda said - starting cycle day one until the day you ovulate.
you should start taking EPO on day one to your O day, then switch it to Faxseed oil.