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The sample size was selected to allow for 80% power to detect a difference of 20 in U-index activity and two nocturnal arousals per night between the two groups with SD at an a-level of 0.05
The vitamin supplements, but not the placebo significantly reduced all 4 metabolite concentrations (methylmalonic acid, homocysteine, 2-methylcitric acid and cystathionine)
Cosmetic ingredient approval is regulatorily distinct from drug approval
The cyclical dosing structure researchers use escalating within a defined window, followed by a rest period reflects an understanding of the peptide as a signaling molecule rather than a substance that accumulates and produces dose-dependent effects the way a drug typically does
