@mangamaker, I see you tried to post 2 links. There is a brief period where new members can't post links. We do this to deter spammers and keep the community safe. Allow me to post the 2 links and to help clarify.

The first article from the FDA was published in April 2020.
- Hydroxychloroquine or Chloroquine for COVID-19: Drug Safety Communication - FDA Cautions Against Use Outside of the Hospital Setting or a Clinical Trial Due to Risk of Heart Rhythm Problems https://www.fda.gov/safety/medical-product-safety-information/hydroxychloroquine-or-chloroquine-covid-19-drug-safety-communication-fda-cautions-against-use

The second article discusses Hydroxychloroquine Side Effects https://www.drugs.com/sfx/hydroxychloroquine-side-effects.html

You're quite right that concerns were being raised about the use of hydroxychloroquine for the treatment of COVID-19 infection.
I understand you are very concerned about taking any fluoroquinolone antibiotic because you experienced adverse effects to these drugs in the past.

It is important to note that these articles are not about the COVID vaccine. There are no quinolones or fluoroquinolones in any COVID vaccine approved for use in the US.