The Pfizer is the least dangerous of the group. It appears that they will soon make the J&J a two shot affair. Meanwhile, you could use this protocol plus baby aspirin to try to minimize the damage from the spike proteins.: If you’re vaxxed, you may be seriously concerned about all those mRNA manufactured spike proteins running around like umpteen bulls in the China shop of your body.  Please consider then the simple, easy and cheap formula to get rid of them : Scant 1/2 teaspoon (tsp) or 1 gram N-Acetyl-Cysteine (NAC); 1/2 tsp or 2 grams Glycine; rounded 1/3 tsp or 2 grams Vitamin C.  Mix with large glass of water with some fruit juice, take 3 times a day with or without food.  Get 250 gram packets of each from Bulk Supplements.  Do this for 60 days and adios, spike proteins. (The NAC is the key, as it disintegrates the 3-D structure of the spike proteins.  See: N-Acetyl Cysteine: A Tool To Perturb SARS-Cov-2 Spike Protein Conformation.) https://chemrxiv.org/engage/chemrxiv/article-details/60c753ec4c89190f3bad43ca