ZMA (Zinc, Magnesium, B6)

Also known as: Zinc Magnesium Aspartate · ZMA

●○○Limited Evidence

A combination of zinc, magnesium, and B6 designed for athletes. Evidence primarily supports benefit in deficient individuals. Not a testosterone booster in well-nourished athletes.

Effective Dose

30mg zinc + 450mg magnesium + 10.5mg B6 / night

per clinical evidence

Evidence Level

Limited

Sleep & Recovery

Mechanism

Corrects zinc and magnesium deficiency; B6 co-factor for neurotransmitter synthesis

primary action

Best For

Sleep quality

Recovery, Testosterone support in deficient athletes

This profile is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare professional before starting any supplementation, especially if you have pre-existing conditions or take medications.

What Is ZMA (Zinc, Magnesium, B6)?

ZMA was developed by Victor Conte (BALCO founder) and first studied in American football players. The premise is that intense training depletes zinc and magnesium through sweat, causing deficiency that impairs testosterone, recovery, and sleep. In zinc- and magnesium-deficient individuals, ZMA restores these to normal — improving all three outcomes.

How It Works: The Science

Zinc is an essential co-factor for testosterone biosynthesis and LH signalling. Magnesium regulates NMDA receptors, ATP synthesis, and sleep quality (via GABA pathway modulation). B6 (pyridoxine) is a co-factor for GABA, serotonin, and dopamine synthesis. Aspartate is the chelate that improves mineral absorption over oxide forms.

Primary Mechanism

Corrects zinc and magnesium deficiency; B6 co-factor for neurotransmitter synthesis

Evidence-Based Benefits

Restores testosterone in zinc-deficient athletes

moderate

Brilla & Conte (2000) — ZMA-supplemented footballers maintained T vs placebo group decline

Improves sleep quality in athletes with mineral deficiency

limited

Mechanistic plausibility from magnesium's sleep role; direct ZMA sleep data limited

Dosage Guide

Effective Dose

30mg zinc + 450mg magnesium + 10.5mg B6 / night

Standard ZMA dose: 30mg zinc, 450mg Mg aspartate, 10.5mg B6 — taken on an empty stomach before bed (calcium inhibits zinc absorption). Take separately from calcium supplements.

Safety Profile & Side Effects

Safe at recommended doses. Excessive zinc (>40mg/day) impairs copper absorption — don't double-dose. B6 neuropathy is a concern only above 100mg/day.

Who Should (and Shouldn't) Take It

Best for

Sleep qualityRecoveryTestosterone support in deficient athletes

Who it's for

Athletes with dietary deficiencies in zinc and magnesium (common in those eating little red meat, nuts, or seeds). Those with good dietary mineral intake will see minimal benefit beyond what the individual minerals provide.

Frequently Asked Questions

What is the recommended dose of ZMA (Zinc, Magnesium, B6)?

Standard ZMA dose: 30mg zinc, 450mg Mg aspartate, 10.5mg B6 — taken on an empty stomach before bed (calcium inhibits zinc absorption). Take separately from calcium supplements.

Is ZMA (Zinc, Magnesium, B6) safe?

Safe at recommended doses. Excessive zinc (>40mg/day) impairs copper absorption — don't double-dose. B6 neuropathy is a concern only above 100mg/day.

How does ZMA (Zinc, Magnesium, B6) work?

Who should take ZMA (Zinc, Magnesium, B6)?

Related Ingredients

Magnesium (Glycinate / Malate)Zinc (Bisglycinate / Picolinate)Vitamin B6 (Pyridoxal-5-Phosphate)Tart Cherry Extract

Medical Disclaimer

Ingredient profiles are for informational purposes only and do not constitute medical advice. Consult a qualified healthcare professional before starting any supplementation, especially if you have pre-existing conditions or take medications. Full disclaimer →