Magnesium is a go-to supplement for better sleep, but there is confusion around how long you need to take it to see results. We asked our chief medical officer, Sohaib Imtiaz, MD, how consistently you need to take magnesium before you start falling asleep faster.

Q: I just started taking magnesium to improve my sleep, but haven’t seen any results yet. How consistently do I have to take it before I start sleeping better?

You should only take magnesium if your blood test shows you are deficient . If you are deficient , it takes time to build up magnesium levels .

It’s not like you can take it and your magnesium levels will be high immediately. Trials on the effects of using magnesium range from about 20 days to eight weeks, so you can expect to see results within that timeframe if y

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