I share the anxiety around another booster and the unpredictable effect it could have on my long COVID status. I tentatively plan to get the booster (whilst masking consistently whenever indoors outside of home), but at the same time, I am taking a few extra weeks to seek it out while I try to boost my B1 level and, ideally, improve my bodyś ability to metabolize the thiamine I take in. I´ve placed my faith in thiamine therapy to bring me gradually back to normal because the emerging literature on B1 and COVID now includes an interest in the possibility that the COVID virus does something to the thiamine metabolism pathway that impairs B1 absorption from diet and/or directly depletes oneś B1 reserve. And since the same literature includes reports of successful uses of thiamine supplementation/repletion in severe acute COVID cases in which symptoms mirrored those associated with chronic B1 deficiency, my instinct to accelerate my B1 supplementation prior to boosting is reinforced. For me, it has taken months for me to arrive at a B1 source that I can process without side-effects or setbacks, and the product that I am therefore upping right now, at an accelerated rate, is TTFD, the synthetic B1 celebrated by the late Dr. Derrick Lonsdale for its superior bioavailability (especially in relation to crossing the blood-brain barrier).