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2014;9(8):e103490.

Vitamin B6 helps in the formation of red blood cells, making proteins, and neurotransmitters

For adults in the UK, the standard dietary reference intake is 1.5 micrograms (g) daily for maintenance of normal health

Zenobi PD, Graf S, Ursprung H, Froesch ER

Due to its mechanistic relevance, it is often discussed alongside broader investigations into metabolic signaling, mitochondrial function, and aging-related research models

Put plainly, the off period is not there because the compound stops working it is there because no one can point to human data showing that running it indefinitely is safe, and a scheduled break is the honest way to respect that gap