i see alot of people on here reccomend 3 gams to use to clear up acne then 500 maintenence....these people over here have had good success with using 10 grams a day...heres the link
http://acne.org/messageboard/viewtopic.php?t=15341&postdays=0&postorder=asc&start=0
http://acne.org/messageboard/viewtopic.php?t=15341&postdays=0&postorder=asc&start=0