I did have four vaccinations. The symptoms that I had after each shot continued since the last one in 9/22. I tested negative. I did have the post exertion malaise.
I do take a couple other supplements that you may wish to research. They are Carnitine and Creatine. They both fight fatigue. Carnitine helps the body turn fat into energy and is used to decrease fatigue with diseases like cancer and MS. Excerpt below from the National Library of Medicine:
“Dietary L-carnitine supplementation successfully has beneficial effects on the energy metabolism of the cells and related mechanisms in regeneration of muscles. Since the beneficial effects of this medication in relieving fatigue caused by diseases such as cancer, MS, etc. have been demonstrated, it can also be considered as a potential option for relieving the fatigue caused by COVID-19. “
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8667465/
Creatine is an amino acid that is a constituent of the muscles that stores energy used for muscular contraction.
“Among the often-mystifying, extended effects of COVID-19 is post-viral fatigue syndrome, or (PVFS). A small new study finds that dietary creatine may help alleviate its symptoms.
The study found that taking dietary creatine for three months substantially improved feelings of fatigue, and by six months, had produced improvements in body aches, breathing issues, loss of taste, headaches, and problems concentrating — or “brain fog” — compared to people given a placebo.”
https://www.medicalnewstoday.com/articles/can-creatine-supplements-help-people-with-long-covid
I am also taking Manuka honey with a rating of 300 from Australia (Whole Foods). It helps the immune system.