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Ingredient file // Vitamin or mineral

Manganese Polysaccharide Complex

A needed mineral with unproven absorption claims

Manganese polysaccharide complex combines a manganese salt with a carbohydrate solution to make a concentrated mineral ingredient. It supplies manganese that dogs need for normal enzyme function. Dog studies have not shown that this particular form works better than manganese sulfate.

What it is
A concentrated manganese source made by combining a soluble manganese salt with a polysaccharide solution.
Made from
Soluble manganese salt and polysaccharides
Main job
Adds dietary manganese
Typical amount
Not published
Watch for
Extra manganese from separate joint supplements
Not the same as
Manganese amino acid chelate

Our read // In our catalog

In 1 of every 185 foods we track

Share of foods that list it

1%

14 of the 2,595 foods with an ingredient list on file, from 1 brand. All dry dog food.

Each square is 1% of the catalog

Where it sits on the label

Median position 59. In the top five of 0 foods, so it is usually a minor ingredient.

Top five List position, heaviest first

Price per lb

Foods with it $3.43
All foods $3.23

Median of the cheapest bag price across 14 priced foods, 6% above the catalog. The price is the food's, not the ingredient's.

Who leans on it

100%

of the foods that list it are from Health Extension. 1 brand use it in total.

What it is

How it is made

Feed additive makers combine a manganese salt with a carbohydrate solution to make a concentrated trace mineral ingredient. It is manufactured for feed mixing, rather than recovered as a leftover from another food process.4,6,9

  1. 01 // Source Salt and solution A soluble manganese salt supplies the mineral, while a polysaccharide solution supplies its carbohydrate carrier.
  2. 02 // Process Mixed together The salt is mixed into the solution so manganese associates with the polysaccharides.
  3. 03 // Process Dried and milled One documented manufacturing route dries the mixture, then mills it into a powder.
  4. 04 // Output Mineral powder A supplier sells the powder with a guaranteed minimum manganese content for feed formulation.

What is in it

Composition, dry matter

17.8

% manganese

The listed dry matter minimum for one commercial product. A small addition supplies manganese without contributing meaningful protein or fat.

Manganese 177,800 mg/kg5
Ash 57.2%5
Crude protein 1.1%5
Crude fat 1.1%5

These dry matter figures describe one commercial product. Its manganese listing is a minimum, while ash, protein and fat are upper limits. Equal row endpoints represent specifications, not measured batch averages.5

Why it is in the bag

What the manufacturer gets

  1. 01

    Meets a mineral target

    Manufacturers add a measured manganese source when the other ingredients do not supply enough to meet the food's intended nutrient profile.3,6

  2. 02

    Fits a dry mix

    The ingredient arrives as a powder with a manganese guarantee, allowing a feed maker to weigh a small amount into a mineral mix.6

  3. 03

    Offers a complexed option

    Organic minerals generally cost more than inorganic salts. A formulator may choose this complex, but no dog study demonstrates a benefit from paying more for it.1,7

How much No usual dog food inclusion is published; about 31 mg of a 16% product supplies 5 mg manganese per kg of food dry matter, before other sources.3,6

Our read // The claims

What the evidence supports

Strong: controlled studies in dogs agree. Some: small or mixed dog data. Thin: mechanism or lab work only. None: nothing, or the evidence points the other way.

  1. Brands say

    Supplies manganese dogs need

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    AAFCO's adult maintenance profile calls for at least 5 mg manganese per kg of food dry matter. A supplier guarantees this ingredient's manganese content. It has a clear nutritional job, though the ingredient name alone cannot show the finished food's total manganese.3,6

  2. Brands say

    Absorbs better than manganese sulfate

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    In an 8-dog crossover study, apparent manganese digestibility was 68.03% with glycine-chelated minerals versus 12.59% with inorganic minerals. Several mineral sources changed together, and none was a polysaccharide complex. The result does not prove this form absorbs better.1

  3. Brands say

    Builds cartilage and repairs sore joints

    Outruns the evidence

    Evidence

    1. Strong
    2. Some
    3. Thin
    4. None

    Manganese supports enzymes used to make cartilage components. That explains a dietary requirement, not an arthritis treatment. The 8-dog mineral study measured digestibility and did not test joint pain, cartilage repair or this polysaccharide complex.1,2

Straight answers

What owners ask

  1. Q01

    Is it just filler?

    No

    It supplies manganese, a required mineral. The powder is concentrated, so only a small amount is needed. Judge the food by its nutritional adequacy statement, not by how unfamiliar this ingredient's name looks.3,6,8

  2. Q02

    Is it a manganese chelate?

    Different complex

    AAFCO lists polysaccharide complexes separately from amino acid chelates. The name identifies the carbohydrate carrier used to make this ingredient; it does not tell you how much manganese a dog absorbs from the finished food.4

  3. Q03

    Should I add more manganese?

    Usually no

    A complete food appropriate for your dog's life stage is designed to supply required minerals. Check joint supplements before adding them: one dog developed liver failure after eating about 100 tablets, though the report could not determine which ingredient caused the injury.2,8

Who uses it

Brands, best sellers and the company it keeps

Top brands, by foods that list it

  1. Health Extension 14

Usually listed with, share of the foods that list it

  1. Dried Beet Pulp 93%
  2. Brewers Dried Yeast 64%
  3. Chicken 57%
  4. Chicken Meal 57%
  5. Chicken Fat 57%
  6. Sweet Potatoes 57%
  7. Brown Rice 50%
  8. Oatmeal 50%
  9. Pearled Barley 50%
  10. Menhaden Fish Meal 50%
  11. Flaxseed 50%
  12. Chickpeas 50%

Our read // On the bag

Check the food's adequacy statement and move on

This belongs among the small mineral additions near the end of an ingredient list. Check the nutritional adequacy statement for your dog's life stage. Its presence tells you manganese was added; its name and list position do not prove better absorption or joint protection.

Sources

What we read

Checked October 1, 2026.

  1. 1 Evaluation of mineral digestibility and physiological status in adult dogs fed an organic mineral-based diet Journal of Animal Science and Technology, 2026 // Journal
  2. 2 Acute enteral manganese intoxication with hepatic failure due to ingestion of a joint supplement overdose Journal of Veterinary Diagnostic Investigation, 2014 // Journal
  3. 3 AAFCO Dog and Cat Food Nutrient Profiles AAFCO, 2015 // Regulator
  4. 4 Official Names and Definitions of Feed Ingredients AAFCO, 2024 // Regulator
  5. 5 SQM Mn 16% - Manganese (QualiTech) Mad Barn FeedBank, n.d. // Database
  6. 6 SQM Manganese 16% QualiTech, 2018 // Industry
  7. 7 Mineral Supplements for Beef Cattle University of Georgia Extension, 2017 // University
  8. 8 Reading Labels AAFCO, n.d. // Regulator
  9. 9 Animal feed compositions and methods of using the same United States Patent and Trademark Office, 2020 // Government
An ingredient on its own tells you very little. What matters is how much of it there is and where it sits in the list. That is why we weigh the top five rather than reacting to any single name further down. Back to the wiki

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