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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Is It Advisable To Take Tablet That Contain Calcium And Magnesium?

Drs. Michael Roizen & Mehmet Oz recently said in a "YouDocs" column that if one takes magnesium with calcium, "you can kiss that calcium goodbye. My physician says it is not true. The 600mg tablet of Caltrate that my wife and I take has 40mg of magnesium in it. What do you say about this issue? How can the world-famous Cleveland Docs be wrong? Thanks!
Mon, 28 Jul 2014
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General & Family Physician,  's  Response
Hello
Please note down and read this carefully , so that you will understand better.
From 30 % to 80 % of ingested calcium is absorbed . The absorption of calcium is inhibited by phosphates & oxalates because these anions forms insoluble salts with calcium in the intestine .
While magnesium and calcium compete for same channel so decreases the absorption of each other .
But magnesium don't form any chelation with calcium so don't inhibit complete absorption.
If in any mineral phosphate or oxalate present then it will inhibit absorption of calcium .
Hope this will help you.
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Is It Advisable To Take Tablet That Contain Calcium And Magnesium?

Hello Please note down and read this carefully , so that you will understand better. From 30 % to 80 % of ingested calcium is absorbed . The absorption of calcium is inhibited by phosphates & oxalates because these anions forms insoluble salts with calcium in the intestine . While magnesium and calcium compete for same channel so decreases the absorption of each other . But magnesium don t form any chelation with calcium so don t inhibit complete absorption. If in any mineral phosphate or oxalate present then it will inhibit absorption of calcium . Hope this will help you.