Yes I think one does need to experiment with different brands and forms of mucuna. After reading LFCs' post I pulled out my bag of Banyan Botanical mp to try it again with no result so I'm back to the extract..Source Naturals' capsules also work for me very nicely. i think it is a good thing to vary dosage and timing of administering this medication...at least for me that is true as doing that seems to allow me to decrease dosage at times and I look for signals from my body for information in real time though iit may be that other people need a set regimen.

Kind Regards to all,
MD