Following the lone provider of PPAP HCL stopped carrying it and a lot of e-mails sent, I seem to have finally found a source for what I come across to become a lifetime changing solution for my ADHD. It known as PPAP HCL. PPAP 23 preferentially inhibited Fe–S cluster enzymes; https://ppaphcl02211.post-blogs.com/51694665/detailed-notes-on-ppap-hcl