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iHerb Customer Reviews



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  • Doctor's Best uses pharmaceutical-grade carnitine fumarate, manufactured by Sigma-Tau of Italy.
    Special Pricing for a Limited Time!

  • Reviews | English
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    Don't take if you have thyroid problems!

    Posted by Reviewer2002330 on Nov 08, 2012

    I didn't do enough research before buying this product. My thyroid gland whas been removed, so I'm taking thyroid hormone replacement meds, and according to some sources, which I found only afterwards (there wasn't any mention of it in the product info), L-carnitine interferes with thyroid hormones. If you have hyperthyroidism, you can take it, but if hypothyroidism or hormone replacement for other reasons, don't take it. Also, the pills are pretty big and thus hard to swallow without food. It's difficult to rate since I only took it a couple of times before realising I shouldn't take it.

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    사용설명서엔 하루에 한캡슐씩인데

    Posted by 4755198848318211789 on Aug 08, 2015

    후기에 하루에4개까지 먹어도 된다는 글은 뭐죠?똑같은 제품 500mg 상품은 그러던데 이건 855mg..근데 이거 한알,500mg 4알 섭취그람에서 볼때 855mg 은 왜 하루 한알로 되어있는지 설명좀..

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    Doctor's Best, Best L-Carnitine Fumarate, 855mg, 180 Veggie Caps

    Posted by Reviewer1243295 on Feb 14, 2009

    After trying Jarrow Formulas brand of Carnitine, I wanted to try another brand, so I tried this one and I really couldn't tell much of a difference.

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    Still waiting for the benefits to kick in

    Posted by Reviewer2503595 on Nov 13, 2010

    still waiting for benefits

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    haven't noticed

    Posted by Reviewer3015501 on Dec 10, 2008

    haven't noticed much of a difference yet

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