vitaminEVIDENCEAUSOTC
Zinc
Essential mineral cofactor in 300+ enzymes. Critical for testosterone, immunity, and mood.
Dose range15–30mg
Half-life—h
Onset—min
Safety4/5high evidence base
Mechanism of action
Cofactor in neurotransmitter synthesis and receptor function. Antagonist at NMDA receptor.
Benefits
Cold duration
EVIDENCEACochrane 2013.
Mild depression (deficient)
EVIDENCEBLai 2012 meta-analysis.
Side effects
- Nausea on empty stomachcommonmild
- Copper deficiency (chronic high dose)uncommonmoderate
Where to buy
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