No, these are two different things, and it's good that the product lists them separately. 2000 mg is the mass of the entire magnesium malate compound (magnesium bound to malic acid), while 300 mg is the mass of the elemental magnesium itself, which is what the body actually uses - magnesium malate contains approximately 15% elemental magnesium. Many products on the market list only one of these two figures, which makes it harder for buyers to compare products from different brands. This kind of separate labeling is therefore one indicator of a transparent label (see also the general review of magnesium compound bioavailability, Pardo et al., 2021).

Vitamin B6 (pyridoxine) is not merely a marketing add-on - it is a vitamin with its own officially recognized functions: it contributes to normal nervous system function, to the reduction of tiredness and fatigue, and to normal psychological function. Magnesium and vitamin B6 are often combined in dietary supplements because both are involved in similar physiological processes (energy metabolism, neuromuscular transmission), and there are also indications regarding the role of both micronutrients in mood (PMC5986464, 2018). The combination therefore meaningfully complements the action of magnesium, though it is not clearly proven that B6 significantly increases the absorption of magnesium itself.

300 mg of elemental magnesium from the supplement is still below the official upper limit for supplemental magnesium, which is 350 mg per day for adults (NIH ODS, 2024), but the dose is already relatively close to this limit - especially if you are also getting additional magnesium from food (nuts, legumes, whole grains). At higher total magnesium intakes, the most common side effect is digestive in nature (softer stools, diarrhea), though this is generally less pronounced with malate than with oxide or citrate. If you have kidney disease, diabetes, or take medication (e.g. diuretics, antibiotics, proton pump inhibitors), consult a doctor before regularly taking such a dose, as reduced excretion may increase the risk of magnesium accumulation.

In the available product information, there is no publicly published independent laboratory test report, which is important information for mineral supplements such as magnesium malate, since raw materials of mineral origin are occasionally at risk of contamination with heavy metals. This does not in itself mean the product is unsafe - dietary supplement manufacturers must meet legal safety requirements (good manufacturing practice, GMP) - but without a publicly available report, it is not possible to independently verify the actual content or purity of a particular batch. If this matters to you, we recommend asking the manufacturer or seller about any available certificates or lab reports before purchasing.