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The Solution Section (FAQ)
What is Source Plus for dogs?
Source Plus is an all-natural micronutrient supplement formulated specifically for dogs. It delivers broad-spectrum micronutrients from selected seaweeds, plus added yeast cultures, brewers yeast, garlic powder, vitamin E, zinc, and natural beef flavor. It grew out of the original SOURCE micronutrient supplement that horse owners began feeding to their dogs with similar results.
Why would my dog need a micronutrient supplement if I already feed a quality dog food?
According to Source, depleted agricultural soils mean essential micronutrients are missing even from the finest dog foods. Source Plus concentrates micronutrients from seaweeds grown in nutrient-rich ocean waters to help fill that gap. The idea is to support what modern feed crops can no longer reliably provide.
What ingredients are in Source Plus for Dogs?
It contains dehydrated seaweed meals, yeast culture, brewer's yeast, garlic powder, vitamin E, zinc proteinate, and natural flavor. These are carefully formulated to help bring optimal health and condition to your dog. The seaweed micronutrients are the core of the product, with the other ingredients added for dogs specifically.
How are the seaweed micronutrients in Source Plus processed?
The micronutrients are concentrated from seaweeds grown in nutrient-rich ocean waters. Source uses careful selection, harvesting, and low-temperature dehydration to capture these nutrients at their peak. This low-heat approach is meant to preserve the broad-spectrum micronutrient content.
What benefits do dog owners report from feeding Source Plus?
Source says owner reports include superior glossy coats, healthy skin condition, successful breedings, and improved temperament and appetites. The supplement is intended to help young dogs grow strong and healthy and to help mature dogs feel their best. Results, of course, can vary from dog to dog.
Where does Source Plus come from, and is it related to a horse supplement?
Yes. More than two decades ago, SOURCE president and founder Susan Domizi was competing on her eventing horse, Hull, who had hoof problems and trouble maintaining weight. Suspecting a nutrient deficiency, she researched Norwegian and Japanese seaweed studies and developed a finely ground seaweed mixture that became SOURCE. Horsemen who saw results in their horses later fed it to their dogs, which led to the dog formula.
Is there a guarantee, and where can I buy Source Plus for Dogs?
Source offers a money-back guarantee: if you are not satisfied with any of their products for any reason, your money will be refunded in full with proof of purchase. Source Plus for Dogs can be ordered directly from Source, and is also available at Amazon, ValleyVet, and many fine dealers.
How can I learn more or order Source Plus for my dog?
You can reach Source Plus by phone at 800-232-2365, or visit https://www.4source.com to read more and order online. Their friendly staff can answer questions about feeding Source Plus to dogs of any age. The company is based in Brunswick, Maine.
Who makes SOURCE PLUS! and how did the company start?
SOURCE PLUS! is made by SOURCE® micronutrients LLC, founded by president Susan Domizi, who introduced SOURCE in 1975. The company began after Susan's eventing horse Hull had hoof problems and could not maintain his body weight despite the finest feeding program and veterinary care, which launched her search for the missing piece in modern diets. That search became a lifelong mission to restore broad-spectrum micronutrition for horses, and later dogs and people.
What are the ingredients in SOURCE PLUS! for dogs?
The ingredient statement is: dehydrated seaweed meals, yeast culture, brewer's yeast, garlic powder, vitamin E, zinc proteinate, and natural flavor. The seaweed base supplies broad-spectrum trace micronutrients, while the added yeast cultures, brewer's yeast, vitamin E and zinc round out the canine formula. A natural flavor helps with palatability so most dogs accept it readily in their food.
Why does SOURCE use seaweed instead of synthetic vitamins?
SOURCE concentrates micronutrients from seaweeds grown in nutrient-rich ocean waters rather than relying on a handful of isolated synthetic vitamins. The company believes the ocean retains the broad spectrum of trace minerals that depleted agricultural soils no longer reliably provide. Careful selection, harvesting and low-temperature dehydration are used to capture these nutrients at their peak.
How is SOURCE seaweed harvested and processed?
SOURCE uses a unique blend of multiple marine-plant species, with harvests carefully scheduled in various parts of the world for specifically selected points in each plant's growth cycle. After harvesting, the seaweeds are dried using low-temperature dehydration to preserve the micronutrients. The result is a dry meal form that is easy to mix into a dog's daily feeding.
What benefits do dog owners report from SOURCE PLUS!?
Dog owners commonly report superior glossy coats, healthy skin condition, successful breedings, and improved temperament and appetites. These reports echo what horsemen first noticed when they fed SOURCE to their dogs after seeing results in their horses. Because it is a broad-spectrum nutritional supplement, owners often describe overall thriving rather than a single isolated change.
How much SOURCE PLUS! do I feed my dog?
Feeding is based on body weight. As a guide, a 15 lb. dog gets about 1 teaspoon daily, a 30 lb. dog about 2 teaspoons, a 45 lb. dog about 3 teaspoons (1 tablespoon), a 60 lb. dog about 4 teaspoons, a 75 lb. dog about 5 teaspoons, and dogs 90 lb. and up about 6 teaspoons (2 tablespoons) per day. Simply mix the recommended amount into one of the daily feedings.
How long does a container of SOURCE PLUS! last?
It depends on your dog's size. For a 15 lb. dog, a 12 oz. container lasts roughly 113 days and a 5 lb. container roughly 756 days. For a larger 60 lb. dog, a 12 oz. container lasts about 28 days and a 5 lb. container about 189 days, so bigger dogs go through it faster while small dogs stretch a container for many months.
What sizes and prices does SOURCE PLUS! come in?
SOURCE PLUS! for dogs is offered in a 12 oz. size priced at $16.47, a 5 lb. size, and a 20 lb. size priced at $171.92. The larger sizes offer better value per ounce for multi-dog households, large breeds or kennels. You can order or ask about current pricing by calling 800-232-2365.
How soon will I see results?
SOURCE asks owners to be patient because the deficiencies developed over a period of time, so visible benefits of improved nutrition are rarely an overnight miracle. In horses, early signs include reduced undigested matter in the manure within days to weeks, with coat and hoof texture changes appearing over a longer period. The principle is the same for dogs: SOURCE works as a foundational nutritional supplement, not a quick fix.
Is SOURCE PLUS! safe and quality-tested?
SOURCE is a founding member of the NASC (National Animal Supplement Council) and is audited and certified to display the NASC Quality Seal. The company states that all components undergo extensive independent laboratory testing, including pesticide and herbicide residue analysis, heavy-metal analyses, and microbiological screening that exceeds human food standards. This testing regimen is applied across the SOURCE product line.
Does SOURCE contain arsenic or other heavy metals?
SOURCE states that its seaweed contains only very low levels of natural organic arsenic, not the toxic inorganic form, at less than 0.5 mg/kg, which is well below toxicity thresholds. Heavy-metal analyses are part of the independent laboratory testing every batch undergoes. The company is transparent about the difference between naturally occurring organic compounds in seaweed and harmful inorganic contaminants.
What micronutrients does the guaranteed analysis list?
The guaranteed analysis includes Calcium (min 0.4%, max 0.9%), Phosphorus 0.4%, Potassium 1.4%, Sodium 1.4%, Magnesium 5,000 mg/kg, Iodine 350 mg/kg, Iron 250 mg/kg, Manganese 35 mg/kg, Copper 5 mg/kg, Zinc 5,600 mg/kg, and Vitamin E minimum 3,250 IU/kg. This reflects the broad-spectrum, trace-mineral approach SOURCE is known for, rather than mega-dosing one or two nutrients.
Is there a satisfaction guarantee?
Yes. SOURCE backs SOURCE PLUS! with a satisfaction guarantee that carries NO TIME LIMIT on results. This reflects the company's long-standing confidence built over decades since its 1975 founding. If you have questions about the guarantee, you can reach SOURCE directly at 800-232-2365.
Why did SOURCE create a dog product after starting with horses?
Horsemen who were impressed with the results of adding SOURCE micronutrients to their horses' diets began feeding it to their dogs and reported similar improvements. That real-world feedback led SOURCE to formulate SOURCE PLUS! specifically for dogs, adding canine-appropriate ingredients such as yeast cultures, brewer's yeast, vitamin E and zinc to the seaweed micronutrient base. Today SOURCE makes formulations for horses, dogs and people.
Can SOURCE be fed to puppies, senior dogs, or breeding dogs?
SOURCE PLUS! is a foundational micronutrient supplement intended to support dogs across life stages, and owners specifically report successful breedings as one of the benefits. As with any supplement, amounts are scaled to body weight using the feeding chart. For dogs with specific medical conditions, it is always wise to consult your veterinarian, and SOURCE staff can answer product questions at 800-232-2365.
How do I contact SOURCE to order or ask questions?
SOURCE can be reached by phone at 800-232-2365 and online at www.4source.com, where the full product line for horses, dogs and people is available. The company is based in the United States and emphasizes direct, knowledgeable customer support. Their tagline, essentials to thrive, reflects the broad-spectrum nutritional philosophy behind every SOURCE product.
