Pfizer COVID-19 vaccine: ingredients, allergic reactions: Two people with known, severe allergies in the UK had non life-threatening anaphylactic reactions shortly after receiving Pfizer's vaccine.
They might've been reacting to one of the vaccine ingredients, or the reaction could have just been their body's immune system stimulation.
"Allergic people should not be disheartened by this news, because there are other vaccines in the pipeline," one allergist said. "And over time we will know more about the profile of these individuals who had a reaction, so that we can take the necessary precautions."
Pfizer said people with common food allergies were not excluded from this study, "because there is no trace of nuts, eggs, or any food in our vaccine."
Here is the full list of ingredients in Pfizer's shot:
- A nucleoside-modified messenger RNA (modRNA) encoding the viral spike glycoprotein of SARS-CoV-2 (this is what makes the shot work)
- Lipids (i.e. fatty substances) including:
- (4-hydroxybutyl)azanediyl)bis(hexane-6,1-diyl)bis(2-hexyldecanoate),
- 2-[(polyethylene glycol)-2000]-N, N-ditetradecylacetamide,
- 1,2-distearoyl-snglycero-3-phosphocholine,
- and cholesterol
- Potassium chloride (in other words, potassium and chlorine)
- Monobasic potassium phosphate
- Sodium chloride (a.k.a salt)
- Dibasic sodium phosphate dihydrate
- Sucrose (yes, that's sugar)
