evidence: This article published in Health Nut News, shared more than 120,000 times, was originally published on the website Complete Health and Happiness. The article discusses the purported dangers of ingredients in the flu vaccine. It claims that the flu vaccine contains several "contaminants", specifically thimerosal, ovalbumin, formaldehyde and sodium deoxycholate, which it labels as known neurotoxins. [...] The other ingredients mentioned in this article, ovalbumin and sodium deoxycholate, are also not known neurotoxins. Ovalbumin is the main protein found in egg white, which is consumed daily by many people in much greater quantities than is found in the flu vaccine, without any ill effects. It can, in rare cases, trigger an allergic reaction, not unlike other food allergies (e.g. peanuts, shellfish). Sodium deoxycholate is a bile salt and a form of deoxycholic acid, which has been used in cosmetic surgery in an injectable form, and at higher levels than in the flu vaccine, to reduce subcutaneous fat. Neurotoxicity is not a known side effect of such treatment.