when I saw "NMDA receptor" I was immediately fascinated

I have long-covid and purposely take low-dose Dextromethorphan (just 15gm)

because it acts as a NMDA Receptor Antagonist

by blocking NMDA Receptors, it helps mitigate overactivation of chronic pain and fatigue pathways

it sounds like Andrew was experiencing the exact opposite effects by aggravating the pathways

* https://pmc.ncbi.nlm.nih.gov/articles/PMC7851375/

* https://images2.imgbox.com/0b/d7/AKg9AJg6_o.png