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Zinc Magnesium Aspartate Capsules

Optimum Nutrition
4.7
(4029 ratings)
Zinc 28 mg
Magnesium 435 mg
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Score91

Optimum Nutrition's ZMA blend provides high total mineral doses from both well-absorbed and less bioavailable forms, offering comprehensive but mixed-quality mineral support.

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Quantity:180 Capsule(s)(60 servings)
Goals:
Fitness
General Health
Sleep Support
Digestive Health
Immunity
Metabolism Boost
Skin Health
Hair Health

Score 91

Optimum Nutrition's ZMA blend provides high total mineral doses from both well-absorbed and less bioavailable forms, offering comprehensive but mixed-quality mineral support.

How scoring works
$39.99($0.66 per serving)
Vitacost
$ 42.03
iHerb
$ 43.02
Walmart
$ 39.99
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Analysis

This Optimum Nutrition Zinc Magnesium Aspartate supplement provides a substantial dose of its key minerals, combining various forms of magnesium (Aspartate and Oxide) and zinc (Aspartate, Monomethionine, and Oxide). While the Aspartate and Monomethionine forms are generally well-regarded for absorption, the presence of Oxide forms means that not all of the high total quantity may be equally utilized by the body. Vitamin B6, in its Pyridoxine Hydrochloride form, completes the blend.

This formulation is suited for individuals seeking a high total intake of zinc and magnesium, potentially for intense training support or addressing significant mineral needs. It offers a comprehensive approach to ZMA supplementation, though the blend of mineral forms results in variable bioavailability. The product aims to deliver a potent mineral foundation for active lifestyles.

Pros

  • Offers a very high total elemental dose of magnesium and zinc from multiple sources.
  • Includes well-regarded forms like Magnesium Aspartate and Zinc Aspartate/Monomethionine.
  • From a reputable brand in the sports nutrition space.
  • Transparently lists all ingredient forms and quantities.

Cons

  • Includes less bioavailable forms (Magnesium Oxide, Zinc Oxide) which may reduce overall absorption efficiency.
  • Uses Pyridoxine HCl for Vitamin B6, not the active P5P form.

Warnings

  • High doses of magnesium and zinc can potentially cause digestive upset; consider adjusting intake if discomfort occurs.
  • Individuals monitoring specific mineral forms for absorption should note the mix of highly and less bioavailable forms.

Nutrient quality

80 High impact

Specialized monomethionine and aspartate forms provide high-quality pathways for mineral absorption. The extremely high total magnesium dose carries a potential risk for gastrointestinal upset.

Ingredient transparency

97 Highest impact

Labeling clearly identifies all vitamin and mineral quantities along with their chemical forms. Simple and technical ingredient naming supports easy consumer evaluation of the formula.

Customer satisfaction

94 Highest impact

Strong ratings from a massive pool of reviews confirm that users find the product effective for recovery and sleep. Consistency in feedback indicates high user trust in the Optimum Nutrition brand.

Value for money

95 Highest impact

At $0.66 per serving, the product offers good value for a high-potency mineral blend with specialized forms. Its competitive pricing and high dose-to-cost ratio justify its popularity.

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Goals

Impact
Highest effect
A Goal FitA- Strength of SupportB+ CoverageA+ Formula Quality

Magnesium and zinc appear well aligned with supporting muscle recovery and protein synthesis.

This specialized mineral formula may contribute to improved strength and energy metabolism for individuals in regular physical training.

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Impact
Highest effect
A Goal FitB Strength of SupportC- CoverageA+ Formula Quality

Magnesium and Zinc are essential for muscle function, energy production, and daily resilience. Vitamin B6 is included to support the cellular uptake and utilization of these core minerals.

Mixed mineral forms are intended for balanced absorption and metabolic utility. The formula appears well aligned with general wellness goals, particularly for those with higher mineral requirements due to stress or activity.

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Impact
Highest effect
B+ Goal FitB- Strength of SupportB CoverageA+ Formula Quality

Magnesium aspartate and zinc are combined with vitamin B6 to support muscle recovery and relaxation. This combination, often used for athletic recovery, provides cofactors that are essential for the production of melatonin and other calming neurotransmitters.

The total magnesium dose of 435mg is on the high side, which could cause a laxative effect for some individuals. The inclusion of magnesium oxide in the blend further reduces the overall bioavailability compared to pure chelated forms.

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Impact
Highest effect
A- Goal FitB+ Strength of SupportB CoverageB+ Formula Quality

This ZMA supplement provides a blend of magnesium and zinc from multiple sources including aspartate and monomethionine. These ingredients may contribute to foundational gut barrier repair and more regular bowel movements.

Ingredients such as magnesium support stool regulation, while zinc is essential for the structural integrity of the intestinal lining. The multi-form blend ensures meaningful coverage, though the inclusion of oxides reduces overall mineral quality.

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Impact
High effect
B+ Goal FitB+ Strength of SupportC+ CoverageA- Formula Quality

This formula provides a robust dose of Zinc and Magnesium intended for recovery and enzymatic function. The 28mg of Zinc supports the function and readiness of immune cells, though the use of multiple forms including Zinc Oxide may impact overall absorption.

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Impact
High effect
B Goal FitB+ Strength of SupportC CoverageA+ Formula Quality

Magnesium aspartate and zinc monomethionine provide bioavailable mineral cofactors for energy production and hormone support. Vitamin B6 contributes to the metabolic processing of macronutrients.

Logical synergy between these nutrients supports the foundation for metabolic efficiency and cellular energy. High bioavailability from specialized zinc forms ensures more effective physiological contribution compared to standard oxide-only multis.

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Ingredients

IngredientAmount per serving
Vitamin B6 (Pyridoxine Hydrochloride)
10 mg
Magnesium (Magnesium Aspartate, Magnesium Oxide)
435 mg
Zinc (Zinc Aspartate, Zinc Monomethionine, Zinc Oxide)
28 mg
Adults 18–50 Women
Report overview
B- Active Ingredient Quality & BioavailabilityA Dose, Safety & Label TransparencyF Value
This ZMA formula provides a moderate dose of zinc from a blend of aspartate, monomethionine, and oxide forms. While highly absorbable on average, the inclusion of oxide and the high cost per serving are minor drawbacks.
F Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyF Value
This magnesium and zinc supplement is designed for muscle recovery and features a blend of magnesium forms. While it provides good synergy with Vitamin B6, the extremely high total dose and use of oxide are significant drawbacks for safety and absorption.
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