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Early studies by Schoenenberger GA and others suggested that it plays a role in delta wave activity, crucial for slow wave sleepthe deepest, most restorative sleep stage

doi: 10.1371/journal.ppat.1000758 229 LevitzS

They deliver the vitamin directly into the bloodstream for faster results

Duan Z, Zhu L, Zhu L, Kun Y and Zhu X 2008 Individual and joint toxic effects of pentachlorophenol and bisphenol A on the development of zebrafish ( Danio rerio ) embryo

It means patients should avoid self-experimentation, unverified online products, and unsupervised dosing

it cannot establish superiority, because differences in population, comparator, endpoint, dose, and trial length confound any direct read