Charles Hakalauai did the original formulation work for guy Abraham.
The 50 mg size is not showing up on their online ordering page, but I just called and placed an order with them 3 weeks ago for 90 tablets of 50 mg
So you might need to call them
I just got an email back from hakala labs, and they told me they're 25 mg tablets that have 180 tablets per bottle are less expensive than their 50 mg tabletswhich have 90 tablets per bottle
Evidently it's more complicated to make the 50 mg tablets