evidence: Graphene oxide is used in Pfizer’s Covid-19 vaccine. [...] A post on Facebook suggests that the Pfizer Covid-19 vaccine contains graphene oxide. [...] Pfizer itself also previously told us: "Graphene oxide is not used in the manufacture of the Pfizer/BioNTech COVID-19 Vaccine. There is no graphene oxide used in the manufacturing process and there is none in the raw materials or the final vaccine product."