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mechanism of ghk-cu copper peptides for hair growth peptide hair: the complete guide to peptide restoration The Effect of the Human
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doi: 10.3109/17453674.2013.765624

doi: 10.1007/s00134-015-3934-7 87

They're implying that this gut serotonin is affecting brain, the brain directly, but it actually serotonin can't cross the blood brain barrier

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Avoid Overdose: Excess intake of certain B vitamins (B6, niacin) may cause adverse effectsfollow dosage instructions
