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Tesamorelin: Most extensive safety data

Systemic metabolic alterations and their relationship to neuropsychiatric symptomatology PAIS, including long COVID, as well as CFS and IMD, share the characteristic of systemic metabolic disturbances, which may be a sign of underlying multi-organ inflammation and exhaustion [31], and consequently may contribute to neuropsychiatric symptomatology, as many metabolites can cross the bloodbrain barrier (BBB) [30, 58] (e.g., short chain fatty acids (SCFAs) derived from the gut microbiota such as acetate [40], amino acids such as tryptophan [52] and also carnitine/acetylcarnitine can cross the BBB via transporters [59])

[PubMed] [PMC] Fallah F, Mahdavi R (2023) Ameliorating effects of L-carnitine and synbiotic co-supplementation on anthropometric measures and cardiometabolic traits in women with obesity: A randomized controlled clinical trial

This is an enormous sodium burden for the critically ill patient, which is not easily mobilized (326, 327)

But of course, more research on this subject will reveal clearer results