My 92 year old Mum's had it.
No problems at all.
She had none from Jabs 1&2 either.
PS All Pfizer
Both Mrs Soupdragon and myself had our boosters this Friday gone.
The good lady had no side effects with all 3 jabs (Pfizer). I had mild chills followed by a warm spell one night and headache for two days (Pfizer booster), had medium shakes one night, sweats the second and a headache for two days with jabs one and two (AstraZeneca).
I'd do it all again tomorrow if needed