Bianchi R, Cervellini I, Porretta-Serapiglia C, Oggioni N, Burkey B, Ghezzi P et al (2012) Beneficial effects of PKF275-055, a novel, selective, orally bioavailable, long-acting dipeptidyl peptidase IV inhibitor in streptozotocin-induced diabetic peripheral neuropathy
(More information) Plant seeds and nuts, especially sunflower seeds, almonds, and hazelnuts, are rich sources of -tocopherol such that vegetable oils (e.g., olive oil and sunflower oil) are rich in -tocopherol
"Therapeutic potential of glutathione-enhancers in stress-related psychopathologies." Neuroscience & Biobehavioral Reviews
Treatment frequency depends on individual goals but is typically weekly or bi-weekly