Koffein + NALT-Kapseln
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Tyrosine supplementation can help maintain cognitive performance in short-term stressful or cognitively demanding situations where catecholamine levels are challenged. [PubMed ↗] [PubMed ↗]
Tyrosine is a precursor to dopamine and norepinephrine; reviews suggest it may blunt stress-related drops in cognitive performance in demanding environments. [PubMed ↗] [PubMed ↗]
Both caffeine and tyrosine are generally well tolerated at supplemental doses used in trials, but caffeine-sensitive users may experience jitters or sleep disruption. [PubMed ↗] [PubMed ↗]
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