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Thorne Research, Zinc Sulfate, 7-Hydrate, 8 fl oz (237 ml) (Discontinued Item)


Out of Stock - Discontinued
  • Shipping Weight: 0.71 lbs (0.32 kg)
  • Product Code: THR-01802
  • UPC Code: 693749018025
  • Package Quantity: 8 fl oz (237 ml)
  • Dimensions: 2 x 2 x 7.2 in, 0.6 lbs (0.27 kg)
Product Overview


  • Dietary Supplement
  • Hypoallergenic

Zinc sulfate solution can be used to test for a possible zinc deficiency. Follow the steps outlined below for oral zinc taste testing. In addition, Zinc Sulfate, 7 Hydrate can be used for zinc supplementation. Each teaspoonful contains 1.5 mg zinc.

Oral Zinc Test

Hold a teaspoonful of the Zinc Sulfate solution in the mouth for 30 seconds and note the taste response from one of four categories:

  1. No specific taste or other sensation is noticed, even after 30 seconds.
  2. No immediate taste is noticed, but after a few seconds a slight taste described as dry, mineral, furry, or even sweet is noticed.
  3. A definite, although not strongly unpleasant, taste is noticed almost immediately and tends to intensify as the 30 seconds pass.
  4. A strong, unpleasant taste is noticed immediately and tends to intensify as the 30 seconds pass.

Individuals in category 1 or 2 might respond favorably to zinc supplementation.

Suggested Use

Take as directed by your health-care practitioner.

Upon opening, install flip-top lid provided and keep lid snapped shut when not in use.

Other Ingredients

Purified water.


Tamper Evident: Use only if bottle is sealed.

If pregnant, consult your health-care practitioner before using this product.

Store tightly sealed in a cool, dry place.

Supplement Facts
Serving Size: One Teaspoon
Serving Per Container: 47
Each (5 ml) Teaspoon Contains: Amount Per Serving % DV
Zinc (as Zinc Sulfate, 7 hydrate)† 1.15 mg 8%
Daily Value (DV)
†0.1% w/v solution.
iHerb Customer Reviews

Easy to use and interesting results!

Posted by RedYetiDave on Mar 21, 2012

To me it tasted like pure mineral water. Whereas my wife could hardly wait to get rid of it! I was advised that three months of Zinc Picolinate at 50MG daily should get me tasting it.

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I bought this to test my zinc levels ...

Posted by Reviewer1346295 on Mar 15, 2012

There are instructions online on how to use this liquid to test your zinc levels. I liked being able to do that on my own, at such a reasonable price, so that's why I bought it. You can supplement it by the tsp., and it tastes alright to me. It is such a big bottle, I don't know if I will ever buy it again though.

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useful for testing zinc levels

Posted by Reviewer1983543 on Jan 04, 2012

Used this to check if my family was deficient in zinc. Not sure how reliable the test was but think we are deficient.

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Zinc Taste Test

Posted by Sprinkles on Aug 09, 2011

We used this to do the "zinc taste test" to find out if we needed to take a zinc supplement or not. It worked just great! And for a very reasonable price, too.

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Posted by Reviewer1492484 on Feb 08, 2011

No taste but after a while I noticed a bitter taste.

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