# What website offers info on drug, vitamin, mineral and supplement interactions

**URL:** <https://boards.straightdope.com/t/what-website-offers-info-on-drug-vitamin-mineral-and-supplement-interactions/621067>\
**Category:** In My Humble Opinion\
**Created:** [May 6, 2012, 2:09pm UTC](https://boards.straightdope.com/t/what-website-offers-info-on-drug-vitamin-mineral-and-supplement-interactions/621067 "2012-05-06T14:09:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Wesley\_Clark](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/wesley_clark/32/20581_2.png) [@Wesley\_Clark](https://boards.straightdope.com/u/Wesley_Clark)\
**Post date:** [May 6, 2012, 2:09pm UTC](https://boards.straightdope.com/t/what-website-offers-info-on-drug-vitamin-mineral-and-supplement-interactions/621067/1 "2012-05-06T14:09:43Z")

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I have seen sites like this before but forget the URLs.

As an example copper and zinc compete to be absorbed, so too much of one could lead to a deficiency of the other.

Does it matter if you take minerals that are chelated to organic molecules (citrate, gluconate, etc) rather than inorganic chelates like oxide? Are those absorbed at different parts of the digestive tract?

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**Author:** ![VOW](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/vow/32/3043_2.png) [@VOW](https://boards.straightdope.com/u/VOW)\
**Post date:** [May 6, 2012, 6:10pm UTC](https://boards.straightdope.com/t/what-website-offers-info-on-drug-vitamin-mineral-and-supplement-interactions/621067/2 "2012-05-06T18:10:22Z")

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One of many:

[http://healthtools.aarp.org/drug-interactions?CMP=KNC-360i-YAHOOBING-HEA&HBX\_PK=drug\_interactions&utm\_source=YAHOOBING&utm\_medium=cpc&utm\_term=drug%2Binteractions&utm\_campaign=M\_Health%2BTools&360cid=SI\_194864521\_320875578\_1](http://healthtools.aarp.org/drug-interactions?CMP=KNC-360i-YAHOOBING-HEA&HBX_PK=drug_interactions&utm_source=YAHOOBING&utm_medium=cpc&utm_term=drug%2Binteractions&utm_campaign=M_Health%2BTools&360cid=SI_194864521_320875578_1)  
~VOW

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**Author:** ![Duckster](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/duckster/32/1244_2.png) [@Duckster](https://boards.straightdope.com/u/Duckster)\
**Post date:** [May 6, 2012, 6:44pm UTC](https://boards.straightdope.com/t/what-website-offers-info-on-drug-vitamin-mineral-and-supplement-interactions/621067/3 "2012-05-06T18:44:05Z")

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[http://www.pdr.net/](http://www.pdr.net/)