That's not even mentioned as a possible side effec
Post# of 22454
Serious adverse events are rare
Among participants who received the vaccine and those who got the placebo alike, the reported rate of serious adverse events is less than 0.5 percentTrusted Source, with no significant differences between the two groups.
Four cases of Bell’s palsy have been reported in participants who received the vaccine, while none has been reported in those who got the placebo.
However, those four cases are consistent with the rate of Bell’s palsy in the general population. In other words, there’s no clear evidence that the Bell’s palsy was caused by the vaccine.
Severe allergic reactions to vaccines are very rare, but they can happen. The FDATrusted Source recommends that people who have experienced a severe allergic reaction to a previous dose of the Pfizer-BioNTech COVID-19 vaccine, or to any of its ingredients, should not receive it.
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If serious side effects are .5 percent for vaccine as well as (correction: "consistent with the rate of Bell’s palsy in the general population" NOT placebo) they are rare.
If you have allergies, consult your doctor first.