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Source Original Powder

Regularly: $37.99

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Less than $0.18/DAY
(160 day supply)


In Stock. Usually Ships within 24 hours.

Less than $0.15/DAY
(960 day supply)


In Stock. Usually Ships within 24 hours.

Shipping weight = 5.50 lbs.



Product Summary:

SOURCE Micronutrients
Original Dry Meal Formula

The expanding depletion of our agricultural soils means that even today’s finest feed ingredients are increasingly micronutrient deficient. The oceans are nature’s richest storehouse of micronutrients. Certain marine plants, unlike plants grown on our agricultural soils, contain the broadest spectrum of trace minerals and other bioactive micronutrients of any plants on earth.

SOURCE Micronutrients are totally natural and derived and concentrated from careful selection of these extraordinary marine plants. Our unique harvesting and processing is dedicated to preserving the maximum bioactivity of these natural materials. Every component undergoes extensive independent laboratory testing to ensure the dependable quality of the micronutrients that horsemen throughout the world have come to rely on since 1975.

SOURCE contains no fillers, binders, preservatives, artificial flavorings, or colorings or added chemicals of any kind.

Dehydrated Seaweed Meals

Feeding Directions:
Mix one heaping measure (included) ½ oz/14g per day with feed, even during hard training, pregnancy and lactation or breeding. Amount based on 1,000 lb. (450kg) body weight. Adjust accordingly. A level measure holds 3 tsp; a heaping measure holds 4 tsp. Feed 1 tsp per 250 lb. body weight. Do not exceed recommended feeding levels.

Additional Information

Guaranteed Analysis:
Crude Protein, min: 5.9%
Crude Fat, min: 2%
Crude Fiber, max: 6%
Iodine, min: 660 ppm

Made in the U.S.A.

Style Item Number Model Number UPC
5lb SLT700326 005 SRC02 749427110052
30lb SLT700326 030 SRC10 749427110304

Product Reviews by Customers

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Browse 5 questions Browse 5 questions and 39 answers
Why did you choose this? Store
Have also used this for years
Irene G on Jul 31, 2019
Ive been using this supplement for over 10 with isyrs and am very pleased
ALICHIA B on May 4, 2018
Have also used this for years
Irene G on Jul 31, 2019
Keeps my horses healthy
KRISTI S on Mar 3, 2019
Ive been using this supplement for over 10 with isyrs and am very pleased
ALICHIA B on May 4, 2018
Ive been using for several years. restocking
ALICHIA B on Oct 2, 2017
Simply the best nutritional supplement for all around use, all horses and by far the most cost effective. We see a difference in their energy and sense of well being with Source. We have used it for about 30 years.
Bonniesue T on Jul 14, 2017
Our 12 horses have been getting Source for many, many years and they look great. We have a therapeutic riding program and are a charity. Our 12 horses range in age from 15 - 30 and all look really fit and young. Source helps with their coat and digestion.
PAMELA R on May 9, 2017
used before and great way to prevent colic in training or stressful times when moving horses.
Diane P on Feb 12, 2017
Have used it for years.
KAREN S on Oct 29, 2016
Its a great supplement. I feed it to the dogs too
STEPHANIE M on Jun 8, 2016
Been feeding this product to every horse I've owned for 35 years!
MELISSA R on Sep 5, 2015
have a 26 yr,-old who is very healthy and like to keep her that way as long as I can.
HELEN M on Aug 4, 2015
We have used Source for years and I noticed more hoof problems when we were not feeding this. The horses really do seem to thrive on it!
Beric W on Jun 27, 2015
the only supplements our horses get ...
Gary W on Jun 26, 2015
Have always used as insurance
SUSAN G on Apr 4, 2015
having problems with hooves and this has been very beneficial in the past.
Christine H on Mar 5, 2015
Essential in my barn. Horse are healthy and shiny!
KRISTI S on Feb 14, 2015
excellent product , been using since it first came out in '70s
John S on Jan 31, 2015
for my horses feet
SAM N on Nov 30, 2014
Have used this product for 20 or 30 years. If we run out, we notice the difference before long.
ALAN & JOYCE E on Oct 23, 2014
Recommended by a trusted friend. Also recommended buy my farrier to help clear up hoof conditions such as white lines disease. Healthier choice than giving table sale.
Stephanie P on Oct 7, 2014
Best micro-nutrient supplement on the market
Mary C on Jun 20, 2014
I like that is consists of the minerals found in seaweed.
KATHY B on Jun 19, 2014
A friend of mine recommended this product since she uses it on her animals. When she dog-sat for us for a week, she opted to put my dogs on the same regimen. I couldn't believe the difference in their coats in just a week! Even the ones with flea allergies had begun to grow fur in the places I thought would be forever bald! If the outer result is that dramatic that quickly, I can well imagine how much good is going on on the inside at the cellular level. All my animals are on this for life!
JILL K on May 23, 2014
Economical, won't interfere with any supplements and great source of micronutrients from the sea. I have used this for years.
CLAUDIA B on Apr 10, 2014
I have been feeding Source to my horses for years as it provides the micronutrients that are missing in the concentrate feed and hay.
SANDRA T on Mar 19, 2014
Economy, good value, good product
DANIELLE W on Feb 12, 2014
Keeps my horses healthy
KRISTI S on Mar 3, 2019
Ive been using for several years. restocking
ALICHIA B on Oct 2, 2017
which is best Source supplement for horses with EMS/Laminitis?
A shopper on Feb 19, 2018
BEST ANSWER: Try this item for the laminitis Item # E001532 Figuerola LaminaSaver. LaminaSaver is a breakthrough product that helps your horse rebuild and regenerate tissues and bones damaged by laminitis. When you click onto this item below is the product summary giving all information on this item.
would this work well for pssm 2 horses that cant have sugar or starch?
SHIRLEY M on Dec 8, 2017
BEST ANSWER: Source is dehydrated seaweed. I have fed this supplement to all my horses, for over fifty years. I bought a mare that had foundered and I also feed Source to her. In addition, I feed grass hay. I also like to feed this horse a small amount (one quarter measuring cup) of Neutrina Safe Choice Special Care for horses that are insulin resistant or have metabolic problems. I feed her one quarter cup twice a day. Hope this helps.
Does Source make your horses more hyper and energetic? I love my nice calm slightly chubby mares but both are prone to hoof cracks and I'd like a supplement that could help with that. Thanks!
A shopper on Feb 1, 2015
BEST ANSWER: From my own experience with feeding Source to my very calm Morgan mares (who are also "easy keepers") I would have to answer "no". Source has proven to be a terrific overall supplement, supporting digestion, strengthening hooves, and adding a nice, lustrous shine to my horse's coat. Definitely try it!
I've heard this product works well for horses who are prone to sunburn. Is this accurate?
A shopper on Dec 21, 2014
BEST ANSWER: I have been using Source for 25 years. I use it to put the bloom on a horse. I think the micro nutrients derived from sea help supplement the nutrient deficient soil that current farming practices deplete. I have used it in So California as well as Oregon. I have not noticed any type of reduction in sunburn. I have Paint horses with a lot of white on their faces and my pastures have little bit of clover in them.
I can say that it will dapple out your horses coat.