You may have noticed that NAC now cannot be found on Amazon and a couple of major retailers have dropped it. This is because of pressure from regulating authorities who aim to marginalize cheap, effective COVID survival solutions. I can personally attest to its anti-COVID effects, we used it when we got the wu flu alongside zinc and Quercetin. Every self-respecting Biohacker should have a bottle of this stuff in their bio-prepping armamentarium.