# What is a good website for drug/supplement interactions

**URL:** <https://boards.straightdope.com/t/what-is-a-good-website-for-drug-supplement-interactions/333634>\
**Category:** Factual Questions\
**Created:** [December 1, 2005, 10:27pm UTC](https://boards.straightdope.com/t/what-is-a-good-website-for-drug-supplement-interactions/333634 "2005-12-01T22:27:16Z")\
**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:** [December 1, 2005, 10:27pm UTC](https://boards.straightdope.com/t/what-is-a-good-website-for-drug-supplement-interactions/333634/1 "2005-12-01T22:27:16Z")

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For example, zinc can cut down on copper levels and you need a proper ratio of them. Alpha lipoic acid can cut down biotin levels by competing with it. So if you take one you are supposed to supplement with another. Aspirin and Ginkgo Biloba can cause dangerous levels of blood thinning.

Where can a person find a website that goes in depth on topics like these?

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**Author:** ![KarlGauss](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/karlgauss/32/3713_2.png) [@KarlGauss](https://boards.straightdope.com/u/KarlGauss)\
**Post date:** [December 2, 2005, 1:48am UTC](https://boards.straightdope.com/t/what-is-a-good-website-for-drug-supplement-interactions/333634/2 "2005-12-02T01:48:31Z")

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> [@Wesley Clark](#):
>
> For example, zinc can cut down on copper levels and you need a proper ratio of them. Alpha lipoic acid can cut down biotin levels by competing with it. So if you take one you are supposed to supplement with another. Aspirin and Ginkgo Biloba can cause dangerous levels of blood thinning.
> 
> Where can a person find a website that goes in depth on topics like these?

I can’t really confirm that supplements are covered in any particular depth, but I’ve been very happy with the information served up by:

[Drug Interactions I](http://www.drugs.com/index.cfm?pageID=1150)

[Drug Interactions II](http://www.drugdigest.org/DD/Interaction/ChooseDrugs)

[Drug Interactions III](http://www.drugstore.com/pharmacy/drugchecker/?aid=332828&aparam=sespider)

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**Author:** ![Imasquare](https://avatars.discourse-cdn.com/v4/letter/i/5f9b8f/32.png) [@Imasquare](https://boards.straightdope.com/u/Imasquare)\
**Post date:** [December 2, 2005, 8:58am UTC](https://boards.straightdope.com/t/what-is-a-good-website-for-drug-supplement-interactions/333634/3 "2005-12-02T08:58:15Z")

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> [@KarlGauss](#):
>
> I can’t really confirm that supplements are covered in any particular depth, but I’ve been very happy with the information served up by:
> 
> [Drug Interactions I](http://www.drugs.com/index.cfm?pageID=1150)
> 
> [Drug Interactions II](http://www.drugdigest.org/DD/Interaction/ChooseDrugs)
> 
> [Drug Interactions III](http://www.drugstore.com/pharmacy/drugchecker/?aid=332828&aparam=sespider)

Also try this one:

[http://www.lef.org/](http://www.lef.org/)