@HealthRanger To the best of my understanding, NAC was probably pulled from the market due to its ability to help the body chelate graphene oxide. It works in similar fashion to hydroxychloroquine, where that helps the uptake of zinc. For NAC, it helps the uptake of glutathione, so that may be the key to pulling the graphene oxide. NAC is found naturally in garlic. It may prove very valuable to test certain foods for concentration of NAC. FDA may target glutathione next...