@DavidPS It doesn’t have to be either or. You are right CoQ10 could have been studied and it was
Coenzyme Q10 as Treatment for Long Term COVID-19
High-dose coenzyme Q10 therapy versus placebo in patients with post COVID-19 condition: a randomized, phase 2, crossover trial
Clearly taurine helps in a way that q10 does not
Functional Role of Taurine in Aging and Cardiovascular Health: An Updated Overview
From the article
"The beneficial effects of taurine on Ca2+ and sodium (Na+) handling [89,90,99,100,101,102,103], myocardial energetics [104,105], and cellular signaling pathways (including glucose transport, 3-phosphoinositide-dependent protein kinase-1, AKT, sirtuin 1 (SIRT1), FOXO3, p38, NFkappaB, and others) [106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121] are thought to underlie its major cardioprotective effects. Other mechanisms include the promotion of natriuresis and diuresis, most likely via an osmoregulatory activity in the kidney, a regulation of vasopressin release, and a modulation of the atrial natriuretic factor secretion [122,123,124,125]. In addition, taurine has been shown to attenuate the actions of angiotensin II on its downstream signaling pathways, on Ca2+ transport, and on protein synthesis [113]."
I came across this - so leaving it here too
Angiotensin-Converting Enzyme 2: SARS-CoV-2 Receptor and Regulator of the Renin-Angiotensin System
