Although many monoaminergic treatments exist, at least a third of patients do not have a response after two or more trials of antidepressant drugs and are considered to have treatment-resistant depression ( Ketamine is a mixture of two enantiomers (mirror image molecules): R- and S-ketamine
Even if I had, a listing does not in any way denote approval of the establishment or its products by FDA. Besides, the FDA has a very loose policy with regards to what it deems to be low risk general wellness products. Many such products end up registered with the FDA as disposable hot or cold packs or something equally mundane, while its users claim health benefits that have never been evaluated by the FDA
R., Carranza, M., & Mariscal, G
Receptor activated exclusively by glutamate discovered on tongue
Bendotti, G., Montefusco, L., Lunati, M