It really depends on the person... magnesium supplements are not like medications / sleeping tablets. Their primary use is to help supplement our diets when we can’t get enough magnesium through food alone.
One of the first signs of a magnesium deficiency is poor sleep, as magnesium plays a key role in supporting neurotransmitters responsible for sleep. So if you're low, replenishing and maintaining levels can gradually improve sleep ... some people notice a difference quite quickly, while for others it can take a few months.
That said, sleep is complex and influenced by many factors, so magnesium is just one piece of the puzzle. And nutrition is always the first place to start.
Apr 15, 2025