I personally take 4 to 6 caps a day of a 1500mg dose, so that would be 6000mg to 9000mg. I have also read of people taking upwards of 10000mg per day. As for the brands, there are differences in the fish they use. It mostly depends on what is available at the time they are purchasing for the...
With my wonderful liver health (hepatic hemangioma) I was using the follwing:
Riki Mushroom Extract
Cleanse Smart
Milk Thistle
Currently Taking:
Sesapure
Sesapure seems to be doing the same job as the other three.