This product contains magnesium bisglycinate and magnesium citrate. Magnesium bisglycinate is an organically bound form that is highly soluble and usually better tolerated than inorganic forms like magnesium oxide. Magnesium citrate is also well absorbed and commonly used in supplements.

Both are organically bound forms of zinc. Zinc monomethionine is zinc bound to the amino acid methionine, known for its high bioavailability. Zinc bisglycinate is zinc bound to two molecules of glycine, which ensures good absorption and mild action on the stomach.

This product uses pyridoxine hydrochloride, a form of vitamin B6 that is widely used in dietary supplements. Although P-5-P (pyridoxal-5-phosphate) is the active form, pyridoxine is suitable for general use.

Ashwagandha is a traditional herb (Withania somnifera) that is often used in supplements. In this formula, it is added on top of the basic combination of zinc, magnesium, and B6. It is a 10–15:1 root extract, which means it is concentrated compared to the original herb.

AstraGin® is a patented blend of Panax notoginseng and Astragalus membranaceus.

ZMA capsules are best taken before bedtime, preferably with a light meal. This timing is chosen because some users tolerate the combination of magnesium and zinc less well on an empty stomach, and taking it in the evening fits well into a fixed routine.