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Therefore, the improvements in hit rates observed with l-theanine, caffeine and their combination in the Go/NoGo task and more importantly the improved d-prime seen with the combination could be considered to reflect underlying improvements of sustained attention
PMID 37255827
11 Section S0, Non-Approved Substances, in WADAs classification system encompasses any compounds without approval by a governmental regulatory health authority for human therapeutic use, which would include all these injectable peptides
Reid CT, Tobin AM, Ahern T, OShea D, Kirby B
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