tylenol blocking glutathione & Depletion: Clinical Evidence Review – PlexusDx Is Tylenol Safe During Pregnancy?

Foods that are high in tryptophan can be converted by your body into serotonin when combined with vitamin B6

Chung KW, J

Additionally, high expression rate of nuclear NF-B p65 in FISS and dose-dependent inhibitory effects on the growth of FISS primary cells treated with NF-B inhibitors suggested a role of NF-B in FISS development (Hsueh et al., 2019)

Any "results" claimed at one week would be inconsistent with how hair grows

e.g., in the UK, the Veterinary Medicines Directorate (VMD) received notifications of FISS in cats associated with different vaccine types

Make sure to get all the details in writing for future reference