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County and Regional Behavioral Health Southeast Florida Behavioral Health Network (SEFBHN)
Injections offer nearly 100% bioavailability, sending the vitamins directly where they are needed
The direct relationship between tryptophan levels and depressive symptoms and fatigue has been demonstrated by Trp depletion experiments, as reviewed elsewhere [76], and is also of interest in the context of long-term COVID, as recent studies have shown a significant decrease in plasma Trp levels in PASC patients [48], and alterations in kynurenine pathway metabolites have been associated with cognitive impairment in long COVID patients [27], as well as with anxiety and depressive symptoms in COVID-19 survivors 6 months post-infection [66]
Many of the studies using hydrolyzed collagen also add several vitamins and nutrients into the test mixture as well
Different mechanisms, complementary targets
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