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However, zinc from plant sources is less bioavailable than from animal foods because they contain large amounts of phytic acid and some other indigestible zinc-binding ligands that make zinc unavailable for absorption (4549)

Even so, it was demonstrated that the primary mechanisms by which psychobiotics exert their effects include HPA axis regulation, immune response and inflammation modulation, and neurohormone and neurotransmitter synthesis as depicted in Figure 5 (70)

Zakrzewska et al., 2022)

The tripeptide-1 component is notably similar to GHK but lacks the copper complex

The presence of headache in C-19 acute phase have been considered a positive prognosis, being associated with lower severity, lower mortality, and lower need of ICU interventions (57)