There is a fair degree of the madness of crowds surrounding the AZ vaccine because of all the higher publicity and modern fear porn media, mindfulness is not a strong suit of many so the stress alone can illicit somatic like symptoms that depending on the individual will remain transitory once they simply forget about the jab for other things more currently interesting. Rarely of course there will be real higher complications....down the line nobody knows categorically, but this is far from unusual in medicine.
Still I am waiting for the Pfizer and for my best timing to have had 3 by the time society drops it's politically heavy virtue signalling, ie just before when near everyone has already or is currently a spreader. The unvaccinated cohort will play no part in the infection numbers either at that time FYI.
I pay more for the name brands occasionally, and consider this no different.
