Heres what actually happens: Rapid Metabolism: A half-life of less than 30 minutes Excretion: Primarily through urine and bile Detection: Can be found in urine for up to 4 days with sensitive testing Breakdown: Quickly broken down into amino acids, integrating into the bodys natural processes Longer-lasting Effects: Despite rapid clearance, its regenerative effects on tissues can persist for weeks The peptide itself doesnt stick around, but the biological processes it triggers will persist
A 2018 review by Sikiric described its effects on the VEGF pathway, which drives the formation of new blood vessels (angiogenesis), and on the nitric oxide system, which regulates blood flow and inflammation
10.1016/S0166-4328(97)86060-3 Behav
When Cochrane reviewers grade an evidence base as very low quality despite a positive pooled effect, this is usually what they are reacting to: not that the benefit is fake, but that the conditions under which it was measured are the conditions that reliably make benefits look bigger than they are
Here's a quick breakdown, per ingredient, of what we mean: Sabroxy Oroxylum indicum bark extract: Notable offers 500mg when, upon closer examination of prominent, successful studies in humans, the clinically relevant dose is 500mg twice daily (for a daily total of 1,000mg).112 enXtra Alpinia galanga extract: Notable delivers 300mg, the low end of a clinical range running from 300mg up to 500mg in studies.113 114 Polygala tenuifolia root extract: Limited human studies support a 300mg dose, three times the 100mg delivered here.115 L-Theanine: 100mg is on the low end of a typical 100-200mg dose, but it should still be effective at mitigating stress toward improved focus.116 Ginkog biloba extract: There is a lot of conflicting research here, but most studies rely on higher doses than the paltry 80mg seen here, typically between 120mg and 240mg.117 So, out of five ingredients, two are delivered at the low end of potentially effective doses, while the other three are underdosed by as much as 66% compared to effective amounts used in clinical studies
