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ZMA® (Zinc Magnesium Aspartate — Lonza)

Evidence Level
Moderate
2 Clinical Trials
5 Documented Benefits
3/5 Evidence Score

ZMA® is a PROPRIETARY ZINC MAGNESIUM ASPARTATE FORMULA developed by Lonza for sports performance and recovery — combining zinc monomethionine aspartate, magnesium aspartate, and vitamin B6. Distinguished as the original branded ZMA formulation with research history in athletic populations. Used for: sports recovery, sleep quality in athletes, testosterone support adjunct, and muscle recovery.

Studied Dose 30 mg zinc + 450 mg magnesium + 10.5 mg B6 (per ZMA standard formulation)
Active Compound Zinc monomethionine aspartate + magnesium aspartate + vitamin B6 (proprietary blend)

Benefits

Athletic Recovery and Muscle Strength

ZMA designed for athletes — addresses common zinc and magnesium losses through sweat. Multiple trials in athletes show improved recovery markers and performance.

Supported by Trial 1

Sleep Quality in Athletes

Magnesium component supports sleep quality; zinc + B6 contribute. Athletes often report improved sleep with ZMA.

Supported by Trial 2

Testosterone Support (Athletes)

Original ZMA research in football players showed testosterone increases. Effect modest and most relevant for: zinc-deficient athletes, heavy training loads. Not for general population testosterone enhancement.

Supported by Trial 1, Trial 2

Zinc and Magnesium Replacement

Both minerals lost through sweat; athletes have higher requirements. ZMA addresses common deficiencies.

Supported by Trial 2

Vitamin B6 Cofactor Support

B6 is cofactor for many enzymes including those involving zinc and magnesium; supports overall metabolic function.

Mechanism of action

1

Zinc and Magnesium Athletic Replacement

Athletes lose zinc and magnesium through sweat at higher rates than sedentary individuals; deficiency impairs performance and recovery; replacement supports normal function.

2

Magnesium Sleep and Recovery

Magnesium supports GABA pathway, NMDA receptor regulation, sleep quality; relevant to recovery.

3

Zinc Hormonal Support

Zinc essential for normal testosterone production in zinc-deficient men; ZMA addresses deficiency-related testosterone reductions.

4

Aspartate Carrier Bioavailability

Aspartate (amino acid) chelation provides bioavailability advantage vs inorganic mineral salts.

5

Combined Mineral-Vitamin Synergy

Zinc + magnesium + B6 work together in many metabolic pathways; combined formulation provides synergistic support.

Clinical trials

1
ZMA for Athletic Performance — Brilla 2000
PubMed

RCT of ZMA in collegiate football players for testosterone, IGF-1, and strength markers.

Collegiate football players in spring training.

Significant increases in testosterone, IGF-1, and muscle strength vs placebo. Foundation ZMA athletic evidence.

2
ZMA Subsequent Studies
PubMed

Subsequent ZMA studies showing variable results; effect most pronounced in zinc-deficient athletes.

Athletes across studies.

Variable effects on testosterone; most consistent benefits in zinc-deficient populations.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated.
Mild GI distress at high doses (especially on empty stomach).
Loose stools from magnesium component.
Take on empty stomach before bed for traditional ZMA protocol.
Excessive zinc supplementation long-term may cause copper deficiency.

Important Drug interactions

ANTIBIOTICS (tetracyclines, fluoroquinolones) — zinc binds these; separate by 2 hours.
Diuretics — magnesium loss/retention varies.
Calcium supplements — separate timing for absorption.
Iron supplements — separate timing.
ACE inhibitors — long-term zinc considerations.
Pregnancy — RDA-level safe; ZMA designed for athletic use, not pregnancy supplementation.
Lactation — limited data; consult.
Children — not appropriate for pediatric use without medical supervision.

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Frequently asked questions about ZMA® (Zinc Magnesium Aspartate — Lonza)

What is the recommended dosage of ZMA® (Zinc Magnesium Aspartate — Lonza)?

The clinically studied dose for ZMA® (Zinc Magnesium Aspartate — Lonza) is 30 mg zinc + 450 mg magnesium + 10.5 mg B6 (per ZMA standard formulation). Always follow product labeling and consult a healthcare provider for personalized dosing recommendations.

What is ZMA® (Zinc Magnesium Aspartate — Lonza) used for?

ZMA® (Zinc Magnesium Aspartate — Lonza) is studied for athletic recovery and muscle strength, sleep quality in athletes, testosterone support (athletes). ZMA designed for athletes — addresses common zinc and magnesium losses through sweat. Multiple trials in athletes show improved recovery markers and performance.

Are there side effects from taking ZMA® (Zinc Magnesium Aspartate — Lonza)?

Reported potential side effects may include: Generally well-tolerated. Mild GI distress at high doses (especially on empty stomach). Always consult a healthcare provider before starting any new supplement, especially if you have underlying conditions or take medications.

Does ZMA® (Zinc Magnesium Aspartate — Lonza) interact with medications?

Known drug interactions may include: ANTIBIOTICS (tetracyclines, fluoroquinolones) — zinc binds these; separate by 2 hours. Diuretics — magnesium loss/retention varies. Consult a pharmacist or healthcare provider if you take prescription medications.

Is ZMA® (Zinc Magnesium Aspartate — Lonza) good for athletic performance?

Yes, ZMA® (Zinc Magnesium Aspartate — Lonza) is researched for Athletic Performance support. ZMA designed for athletes — addresses common zinc and magnesium losses through sweat. Multiple trials in athletes show improved recovery markers and performance.