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For Leg Pain, How Much Magnesium Is Too Much?

Q. I started getting muscle movements in my legs in the mornings while lying in bed. It wasn't "restless leg syndrome" because I did not feel like I had to move my legs. I just had an unusual feeling of muscles moving under the skin.

I heard a discussion on the radio about this that suggested using magnesium. I’ve started taking 1000 mg before bed, and although it doesn't stop it completely, it does minimize the discomfort somewhat. Is 1000 mg of magnesium a day too much?

A. Your body will let you know if you are taking too much magnesium. In excess, this mineral causes diarrhea. For most people, 300 mg a day or so is tolerable, but 1000 mg would not be. People with kidney problems should avoid any supplemental magnesium, as it could put too much strain on the kidneys.

We are sending you our Guide to Leg Pain, which contains many other suggestions for coping with leg cramps or restless legs.

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About the Author
Joe Graedon is a pharmacologist who has dedicated his career to making drug information understandable to consumers. His best-selling book, The People’s Pharmacy, was published in 1976 and led to a syndicated newspaper column, syndicated public radio show and web site. In 2006, Long Island University awarded him an honorary doctorate as “one of the country's leading drug experts for the consumer.”.
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