Are we talking about raising test "back to normal" in PCT after use of a suppressive compound?
In the absence of a SERM, I wouldn't advise SuperPCT (or any otc product) as the sole means by which to get the hpta firing again.
If we are talking about use in conjunction with a SERM, after a SERM, or solo use for natty increases in test, then yes, a lower dose can be used.
The 10 cap dose is based off of scientifically relevant doses of substances, so that is indeed the most effective dose.
You can take less than 10 caps, but results will likely be reduced at least to some extent.
Hope that helps.