Serving directions vary by product. Some list a single chew or gummy per day, others recommend two chews per day, and several specify milligram amounts per serving (examples in our results: 400 mg magnesium per serving, and 22 mg elemental magnesium from 200 mg magnesium glycinate per serving).
Examples in the results include a chewable magnesium tablet listing 400 mg per serving, and a magnesium glycinate gummy listing 22 mg elemental magnesium per serving (from 200 mg magnesium glycinate).