Customize Your Shopping Experience!

Please select the destination country, language, and currency you prefer.

Available Shipping Methods
Available Payment Methods
Added to Cart
Combo Discount:
View/Edit Cart Checkout
Cart Total:
Customers Also Bought:
Our Price:
Earn 10% Loyalty Credit ?


close button

The item is currently out of stock and replenishment is unconfirmed.

Out of Stock - Discontinued
  • 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.

Visit Manufacturer's Website
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

5 Stars
4 Stars
3 Stars
2 Stars
1 Stars


Posted by Reviewer1454222 on Apr 21, 2010

I did the zinc taste test using this heptahydrate solution, and it turned out I had a major zinc deficiency. After taking zinc picolinate for about two weeks, I did the taste test again, and my deficiency is now only slight.

Was this review helpful to you?

2 people found the following review helpful

measure your zinc levels

Posted by Reviewer1365321 on Apr 16, 2010

You can use this product to measure your zinc levels. Just take a small sip in your mouth. If you taste little little to nothing, you need more zinc until when you take a sip it tastes very strongly like metal that you want to spit it out. Great product.

Was this review helpful to you?

1 person found the following review helpful

Zinc Sulfate 7 Hydrate

Posted by Reviewer2328138 on Sep 24, 2010

I bought this to test if I had enough zinc reserves. According to Dr. Atkins, just swish this around inside your mouth and should be very bitter. In my case, no taste at all. Am taking 150mg of zinc until it shows up. Then can just take as regular zinc.

Was this review helpful to you?

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.

Was this review helpful to you?

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.

Was this review helpful to you?

See All Reviews