Soy Isoflavone Concentrate | GNC
Note: This product cannot be sold in Canada

Product Information



  • Support for bone and heart health*
Emerging research indicates that soy isoflavones can help maintain healthy bone density and support heart health.* SuperFoods Soy Isoflavone Concentrate uses only Non-Genetically Modified (Non-GMO)soybeans that have not been altered to raise or enhance the level of naturally occurring isoflavones.


Nutrition Facts
Serving Size  1 Capsule(s)
Servings Per Container  90

Amount Per Serving     % DV

Soy Isoflavone Concentrate (40% Isoflavones = 20 mg)  50 mg   **

** Daily Value (DV) not established.
Other Ingredients
Dicalcium Phosphate, Gelatin, Cellulose
Label (click image to enlarge)

How To Use

As a dietary supplement, take one capsule daily.
Consult your physician prior to using this product if you are pregnant, nursing, taking medication, or have a medical condition. Discontinue use two weeks prior to surgery.
Distributed by: General Nutrition Corporation Pittsburgh, Pa 15222


4.8 / 5.0
14 Reviews
5 Stars
4 Stars
3 Stars
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1 Star
Soy isoflavones the missing ingredient for Menopause PM
Recommend the soy isoflavones which i take with Midnite PM for a restfull night.
May 20, 2018
5 months ago
Have used for years to help with hot flashes. No longer available in stores. Dislike having to pay shipping
July 26, 2017
1 year ago
I started taking soy for controlling cholestertol several years ago
My doctor started me on Lipitor and I also started taking soy ~ When the nurse checked my cholesterol reading the next time I was there she said that I must be doing something else besides taking Lipitor and yes I was taking soy ~ I was also walking in the evening, etc. but that didn't seem to have done anything for lowering it so had asked to be put on something for cholesterol ~ By the way, I now take Simvastatin (instead of Lipitor) and it is MUCH cheaper and my cholesterol readings are even better! ~ When they quit carrying it at our GNC store I did panic ~As a woman, I definitely feel that the NON-GMO Soy Isoflavones helps my body in several ways!
July 18, 2017
1 year ago
Great price.
Started taking this product a few years ago when I could no longer get "Soy Balance" by Nature Made. I liked that the GNC product is natural. Only draw back is that I can only get it on line. But I just make sure I order it in plenty of time.
March 9, 2017
awesome product
Ordered a bunch of these online for a friend. It was very good for her body health. I highly recommend it!
November 7, 2015
very good products
After taking it for a week, my skin becomes better.
November 5, 2015
soy isoflavone is good
it is good for my sister?the doctor told her to buy some soy isoflavone?it is good for her health?so i bought gnc?it is good.
shipping is expensive.
August 31, 2015
first time used
Good service and fast shipping. My friend liked the product, very helpful for her body
April 15, 2015
good for women
I take it everyday, it's light and effective,
I think it is good for women to keep heathy and young :)
December 17, 2014
,,,,it's so good. I want to share .....
i take this three times a day,every day. this time i bought some for my sister .
December 9, 2014
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GNC Store
good for women who are older than 40 years old
l a on Apr 5, 2015
good for women who are older than 40 years old
l a on Apr 5, 2015
Does the product contain 100% Soy Isoflavones or are there other ingredients included in it?
A shopper on Apr 14, 2016
Could you specify the different Isoflavones per capsule ?- Genistein, Glycitein, Daidzein ?
A shopper on Sep 22, 2016
where are these products made ?????
A shopper on Oct 1, 2016
How long should I use this product? Continuously or phase?
A shopper on Jan 25, 2015
BEST ANSWER: This does not have a time limit for use however, this should be stopped 2 weeks before any surgeries.
I'm in China, I bought this product with the old package a couple days ago in an online store of China, but when I got it, I found the print of the Lot No./Best By: is different from what I bought before. I asked the seller and he told me that the print varies from the production batch. Can you tell me is it possible the product i bought this time is fake?
A shopper on May 9, 2013
BEST ANSWER: Lot No. and Best By dates vary on ALL medications and supplements based on their production run- the Lot Number (No.) is the specific batch of production.
when is the expired date?
A shopper on Mar 18, 2016
dear sir:i want to buy one of Soy Isoflavone Concentrate(90 Capsules) to hong kong,how much shipping charge? thanks
A shopper on Oct 9, 2016