l-theanine and glutathione Vitanergy Beauty Sleep & Skin Glow, L-Theanine, 56 Capsules NOW Supplements, Glutathione 250 mg,

TB-500 (Thymosin Beta-4) Not FDA-approved as a finished drug product, though clinical trials have used IV thymosin beta-4

Doctors can diagnose deficiency through a blood test checking levels of vitamin A/retinol

doi: 10.1038/s41531-023-00505-0 65 HerbertM

Current evidence supports a multifactorial etiology in which more than 90 susceptibility loci, rare monogenic variants (e.g., LRRK2, SNCA, PRKN, and PINK1) and environmental toxicants (pesticides, heavy metals, and solvents) converge on three inter-related pathological hallmarks: oxidative stress, mitochondrial dysfunction and chronic neuroinflammation

(PubMed) Gerstenberger JP, Bauer SR, Van Blarigan EL, et al

FMN, Flavin mononucleotide