is a leader in the use of natural-source vitamins for animals since 1989.  We offer various products that are university and field tested.  Powders, liquids, paste and injectable formulations are available.  Our products have been administered to animals throughout the world.

To learn more about our products and recommendations for use, please search by product.

“Do your cattle get enough vitamin D?”


Dr. Corwin Nelson, University of Florida


This article recently appeared in the October 2015, issue of Progressive Cattleman.  Dr. Nelson reviews recent information on the need for vitamin D supplementation in beef cows and calves.  For newborn beef calves, Dr. Nelson recommends an injectable source of vitamin D at birth to build up vitamin D stores in the calf.  In the article, Dr. Nelson wrote “Even though the springtime sun will stimulate vitamin D production in their skin, it takes a couple of months to reach adequacy.  Based on experiments I have done, 200,000 I.U. vitamin D3 injected at birth will boost serum 25-hydroxyvitamin D of calves to near 50 ng per mL”.  Dr. Nelson recommends products that contain at least 50,000 I.U. vitamin D per mL of product.

Besides vitamin D, VITAL E-Newborn from Stuart Products, Inc. also provides vitamin E and vitamin A for the newborn calf.  Each mL contains 500 I.U. vitamin E, 50,000 I.U. vitamin A and 50,000 I.U. vitamin D that has been proven to be biologically available to the calf.  Inject newborn calves with 5 mL at birth. 

For more information, please contact us.



Posters presented at 2014 Joint annual meeting
Wednesday, 16 July 2014 15:05

Posters presented at 2014 Joint annual meeting of The American Dairy Science Association® (ADSA®), the American Society of Animal Science (ASAS), and the Canadian Society of Animal Science (CSAS).

Response of newborn calves to injectable vitamins A, D and E.
Abstract Number 1662, 2014 JAM

Differences in formulation and bioavailability of commercial injectable fat-soluble vitamin products.
Abstract Number 1890, 2014 JAM

Friday, 04 July 2014 09:40

Rationale for EMCELLE®E-D3 LIQUID in drinking water for weaned pigs.

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Fat-soluble vitamins A, D and E are each metabolized differently by pigs.

Fat-soluble vitamin status in pigs is very complex because metabolism of each fat-soluble vitamin is different in the pig.  Pigs have a dietary requirement for vitamin A and vitamin E since neither can be produced in the body, while vitamin D can be produced in pigs that have adequate access to sunlight.  Without adequate sunlight, vitamin D would then be required in the pig’s diet.


While nursing, pig’s vitamin E and vitamin A status are usually adequate, however vitamin D status is usually low due to low levels in sow’s milk.  What is interesting is that vitamin E status goes down very quickly after weaning because of lack of body stores. Pigs’, vitamin D status continues to be very low, and vitamin A status is not impacted by weaning, since vitamin A is stored in the liver.


Weaned pigs can not utilize feed-grade vitamin E.

University and field studies have shown that newly-weaned pigs 

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Increase in Vitamin E and A in Ovaries of Gilts After Injection of VITAL E®-Repro

Below is a recent “News To Use” on the impact of injecting gilts with VITAL E-Repro.  Serum and ovary levels were dramatically increased, signifying the importance of fat-soluble vitamins for gilts and sows.


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