This is a patented formula of zinc and magnesium aspartate.
Function
It is a relatively little-studied supplement, but a study by Brilla (2000) suggests its ability to stimulate endogenous production of anabolic hormones such as testosterone and IGF-1. However, these findings are not always confirmed (Wilborn, 2004), so the efficacy of ZMA as a hormone stimulator is far from certain.
Negative notes
There are no known adverse effects associated with taking ZMA, but, as mentioned above, it is still a poorly understood supplement.
Form and posology
ZMA is mainly available on the market in tablet form. For dosage, it is recommended to follow the indications on the label of the product purchased.