In reference to your upcoming vaccination ...
Most people don't experience side effects, but some do; young adults are the most often affected.
Apparently the spike proteins synthesized and released into the bloodstream like to attach to epithelial cells, particularly in ovaries and artery walls, attracting unwelcome attention of the immune system to those loci.
A paper published last week covered results of a randomly-controlled-trial administering arginine supplements along with vaccinations, that proved to substantially reduce incidence of unwelcome side effects.
The good news is you can buy arginine right off the shelf, and cheaply. You might not find out if you *would have* got those side effects, which may be disappointing, but that is much better than actually having them. If in fact you would not have, the excess arginine is at absolute worst totally harmless.
If you don't feel like buying arginine tablets, you can fill up on walnuts, almonds, or even peanuts, which all deliver a nice surplus of arginine.
(This will be my only mention of vaccines here. I hope the mention was not unwelcome.)