The effect of magnesium supplementation on primary insomnia in elderly
A double-blind trial found magnesium supplementation improved sleep time and sleep quality in older adults with insomnia.

An independent summary of published ingredient research, not the original paper or a clinical study of CORE49.
What the research found
In an eight-week trial, 46 older adults received magnesium or placebo. The magnesium group showed improvements in several subjective sleep measures, including sleep efficiency and time to fall asleep.
The important context
The study involved older adults with insomnia and a specific protocol. A small trial in this group cannot establish a general sleep benefit for everyone or for another magnesium formulation.
Where CORE49 fits
This paper informs our understanding of an individual ingredient. It did not evaluate the finished CORE49 formula. Study populations, ingredient forms and amounts can differ from those in our daily drink; ingredient evidence and formula evidence are not interchangeable.