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  • Fos Formula is orthophosphoric acid with additional choline, inositol and Riboflavin added.
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Phosphoric Acid


Product Description


2 ounce liquid

May support digestion and feelings of queasiness.

ortho-phosphoric acid 400 mg, inositol 40 mg, choline 20, riboflavin B2 170 mcg

1-2 droppersful in water or apple juice per time

Product Reviews

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  1. It Works!

    Posted by Janet B. on Jan 25th 2018

    I can't say what the phosphoric drops do for getting rid of stones, but they sure help with gall bladder pain. I put 2 droppers in 1/4 apple juice and take tiny sips for 15 to 20 minutes. Pain often stops after one or two sips. Amazong! (Have not had a full-blown attack since using.)

  2. Super helpful!

    Posted by Colleen on Jan 21st 2018

    Really works to reduce gb pain for me. Tip: Even diluted, this stuff is hard on your tooth enamel, so sip it to the back of your mouth with a straw.

  3. Lifesaver for intense painful attacks

    Posted by Unknown on Sep 29th 2017

    Heidi and Debbie told me the secret to this amazing drink. You have to continue sipping it slowly until the gallbladder attack pain subsides. I originally just followed the instructions and gave up after the dosage on the bottle didn't work for me. I also chugged it instead of sipping it. This is the only thing besides a chinese medicine that helps me during painful bouts (I have Sphincter Of Oddi Dysfunction and low performing gallbladder issues)

  4. OPA

    Posted by Carmel on Apr 15th 2017

    This is a fantastic product
    If you have gallbladder pain or discomfort this works with me within 20 minutes of taking it
    I wouldn't be without this

    Daily dose essential for great results

    Highly recommend this product

  5. Best product on the market

    Posted by Michele Fergus on Oct 21st 2016

    I use this product every day after every meal in order to avoid any problems. It is especially helpful when I cheat and eat something I shouldn't. With the onset of nausea or cramping, a couple drops of this in apple juice works almost instantaneously along with the massage technique indicated in one of the newsletters. I love this product and always keep some on hand.

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