Since these are supplements I think it up to the discretion of the creator, the more the better I'd guess for them, or perhaps its hard to pack the nutrients you'd get into eating, let's say, liver, the normal way into two capsules.

Try a few different doses out on yourself and see if you "feel" any different. My guess is that you will not in the short term and in the long term there are so many other variables that any conclusive evidence would be confounded.