evidence: - Active Ingredient - nucleoside-modified messenger RNA (modRNA) encoding the viral spike glycoprotein (S) of SARS-CoV-2 - Lipids - (4-hydroxybutyl)azanediyl)bis(hexane-6,1-diyl)bis (ALC-3015) [...] The Pfizer vaccine, like one from Moderna, uses lipid nanoparticles to encase the RNA. The nanoparticles are, basically, tiny greasy spheres that protect the mRNA and help it slide inside cells. [...] The Pfizer vaccine contains four salts, one of which is ordinary table salt. Together, these salts are better known as phosphate-buffered saline, or PBS, a very common ingredient that keeps the pH, or acidity, of the vaccine close to that of a person’s body. You’ll understand how important that is if you’ve ever squeezed lemon juice on a cut. Substances with the wrong acidity can injure cells or get quickly degraded.