Description of ZMA – Magnesium, Zinc and B6
Short summary
ZMA – Magnesium, Zinc and B6 is a combination supplement that puts magnesium front and center, complemented by zinc and vitamin B6. This combination is best scientifically supported as support for sleep, muscle recovery and general metabolism, rather than as a proven means of boosting testosterone, despite a name reminiscent of the classic 'ZMA' formula.
6.1 / 10Our expert rating
Ingredient quality6.5
Formula transparency7.5
Effectiveness3.9
Safety9.5
Independent testing1.0
How to use
Take the recommended daily amount in the evening, 30-60 minutes before bed, separately from meals or supplements rich in calcium, as calcium can reduce the absorption of zinc and magnesium. Take with a glass of water. If unsure about dosage, consult a pharmacist or doctor.
Pros and Cons
The emphasis on magnesium as the main ingredient aligns with the strongest evidence in this group of ingredients (sleep, muscle recovery)
Combining three related nutrients in one product simplifies your daily routine
Suitable for evening use as part of a pre-sleep routine
The name and description do not specify the exact chemical forms of zinc and magnesium used, making it harder to assess actual bioavailability
Independent science does not support the testosterone-boosting claims often associated with this product category (Wilborn et al., 2004)
A less established brand means less publicly available data on independent testing compared to larger competitors
Suitable for
People looking primarily for magnesium support for sleep and relaxation, complemented by zinc and B6
Recreational athletes wanting support for muscle recovery after training
People with increased magnesium and zinc needs due to physical activity or stress
Within this group of ingredients, magnesium is actually the mineral with the most recent, high-quality scientific evidence behind it - it has been linked to better sleep quality, reduced muscle soreness after exercise, and support for muscle integrity (2024, PMC11227245; 2023, PMC10745813). Zinc and vitamin B6 complement the formula as important cofactors for metabolism and immune function, but in this specific combination they have less direct clinical evidence of added benefit compared to magnesium added on its own. The order in the name is therefore sensibly aligned with the actual strength of the evidence.
There are systematic reviews suggesting that magnesium supplementation may mildly help reduce self-reported anxiety and improve sleep quality (2024, PMC11136869), with the mechanism linked to magnesium's role in regulating the nervous system (GABA/NMDA receptors). It's important to emphasize that the evidence points to mild, not dramatic, effects, and that the product is not intended to treat anxiety disorders or other medical conditions. If you have significant, persistent issues with anxiety or sleep, consult a doctor - the dietary supplement can serve as additional, not sole, support.
Yes, this is one of the better-supported uses for magnesium in this group of ingredients - recent systematic reviews show that magnesium, through an anti-inflammatory mechanism, can reduce delayed onset muscle soreness (DOMS) after exercise (2024, PMC11227245), while zinc is an important cofactor in protein synthesis, which is relevant for muscle regeneration (ISSN Mineral Review, 2019, PMC6471179). The effect is more pronounced in intensively trained individuals with greater mineral losses through sweating, and smaller if your baseline dietary intake is already sufficient.
At the standard doses contained in products of this type, the risk is low if you follow the recommended daily amount. With magnesium, higher supplemental doses (above approximately 350 mg) can cause a mild laxative effect, and in the case of kidney disease there is a risk of accumulation, so consult a doctor in that case. The upper safe limit for zinc is 40 mg per day (NCBI Bookshelf, DRI Zinc). The risk increases mainly if you simultaneously take several different supplements or fortified foods with the same minerals, so it makes sense to check your total daily intake from all sources.
No major allergens listed.
During pregnancy and breastfeeding, consult a doctor before use.
People with kidney disease should consult a doctor before use due to the risk of magnesium accumulation.
Do not exceed the recommended daily dose; pay attention to your total daily intake of zinc, magnesium and vitamin B6 from all sources, including other supplements.
Ingredients
Magnesium oxide, bulking agent: cellulose, zinc L-monomethionine sulfate, zinc L-aspartate, anti-caking agent: magnesium salts of fatty acids; dried bamboo extract (Bambusa bambos, young shoots), standardized to 85% silicon (SiO₂); pyridoxal-5-phosphate (vitamin B6).
Form:Capsules
Dose:1 capsule
Available flavors:Unflavored
Magnesium:250 mg
Zinc:15 mg
Vitamin B6:3.5 mg
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