Muscle spasms linked to vitamin D usage

DEAR DR. GOTT: I read your article on severe cramping and muscle spasms. I took 1,000 IU of vitamin D with my calcium for 10 months. I was up from 10 to 20 times a night with severe, excruciating cramps. Then I ran out of vitamin D and didn’t take it for a couple of days. I had no cramps during this time. I tried a lower dose of D two more times. The cramps started immediately. I stopped the D again and am finally cramp-free.

It’s strange but true. People should look into their meds, even if cramps and spasms aren’t listed as a side effect. Also, if I get my vitamin D naturally, why do I need a supplement to help absorb calcium?
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