Walk into any pharmacy or browse Amazon. Most "nervous system" or "brain support" supplements use proprietary blends that hide their underdosing — splashing in 50mg of B2 when the research used 400mg.†
For nutrients to support what they're studied to support, they have to be present in the exact doses shown in clinical research.†
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Proprietary blends
Hide individual doses behind a single total. You never know what you're actually getting.
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Marketing-dose vitamins
50mg of B2 when research uses 400mg. 100mg of magnesium when research uses 400-600mg.
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Wrong forms
Magnesium oxide (poorly absorbed, ~4% bioavailability) instead of glycinate or citrate (well-absorbed, better tolerated).