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Ingredient file // Vitamin or mineral

Riboflavin

A necessary vitamin, not an energy boost

Riboflavin is vitamin B2, added in small amounts to help make dog food nutritionally complete. Dogs need it to use nutrients from food. Extra riboflavin has no demonstrated benefit for a dog already getting enough.

Role in the food Supporting nutrient
What it is
A water-soluble vitamin added to dog food as a concentrated powder, usually produced by microbial fermentation.
Made from
Sugar fermented by vitamin-producing microbes
Main job
Meet the vitamin B2 requirement
Typical amount
Not published
Watch for
Unbalanced homemade diets
Not the same as
Vitamin B12

Straight answer

Is Riboflavin safe for dogs?

Check the food's adequacy, not vitamin promises

Riboflavin belongs near the end of an ingredient list because the recipe needs little of it. Check the nutritional adequacy statement for your dog's life stage. Treat the listing as routine vitamin fortification, not a reason to expect extra energy, a shinier coat or better eyesight.

Why it is in the food
Meet the vitamin B2 requirement

Our read // In our catalog

In 1 of every 1 foods we track

Share of foods that list it

82%

2,640 of the 3,204 foods with an ingredient list on file, from 91 brands. 1,715 dry dog food, 802 wet dog food, 49 dog food topper.

Each square is 1% of the catalog

Where it sits on the label

Median position 23. In the top five of 6 foods, so it is usually a minor ingredient.

Top five List position, heaviest first

Above the salt

8%

Usually listed after the salt, which caps it at roughly 1% of the recipe in 92% of foods.

Price per lb

Foods with it $3.17
All foods $3.25

Median of the cheapest bag price across 1,464 priced foods, about level with the catalog. The price is the food's, not the ingredient's.

Who leans on it

7%

of the foods that list it are from Purina. 91 brands use it in total.

What it is

How it is made

Riboflavin is made expressly for food and feed fortification. Producers grow vitamin-producing microbes on a sugar-based medium, separate riboflavin from the broth, and dry it. A lower-strength feed preparation is blended with maltodextrin.5,6,7

  1. 01 // Source Sugar and microbes A sugar-based growth medium feeds microbes selected to produce large amounts of riboflavin.
  2. 02 // Process Fermented The microbes grow in controlled tanks, producing riboflavin in the fermentation broth.
  3. 03 // Process Recovered Heat inactivates the microbes, then centrifugation separates riboflavin crystals from cells and broth.
  4. 04 // Process Dried or blended Recovered riboflavin is purified and dried; some feed preparations are blended with maltodextrin.
  5. 05 // Output Riboflavin powder The concentrated yellow powder is ready for a vitamin premix or direct addition to feed.

What is in it

Composition, dry matter

98.8

% riboflavin

The average active vitamin in a tested concentrated grade. The powder supplies a vitamin, not meaningful protein, fat or fiber.

Riboflavin 98.6-98.8%5
Total impurities 0.2-0.4%5
Sulfated ash 0.1%5

These results describe one concentrated grade, not every supplier's powder. EFSA also assessed a preparation blended with maltodextrin. Impurity and ash figures were reported as sold; converting for the reported moisture leaves their rounded dry matter values unchanged.5

Why it is in the bag

A real vitamin, added in the small dose needed

  1. Main nutrition
  2. Supporting nutrient
  3. Does a job
  4. Mostly filler

Manufacturers add riboflavin so the finished food meets AAFCO's vitamin B2 minimum for complete dog food, whatever the base ingredients supply. It sits near the end of the list because ingredients are ordered by weight and the recipe needs only a little. A small amount is not filler: it is an essential vitamin. Adding more than the requirement has no demonstrated benefit.1,4,8

  1. 01

    Closes vitamin gaps

    The base ingredients contribute riboflavin, but a measured addition helps the finished food meet its nutrient target.4,9

  2. 02

    Supports normal metabolism

    Dogs use riboflavin to make enzyme helpers involved in processing carbohydrates, fats and proteins. The powder supplies the vitamin, not a meaningful amount of calories.7

  3. 03

    Affordable at scale

    Microbial fermentation costs less than multistep chemical synthesis. It supplies a large feed market with a concentrated vitamin that manufacturers need only in small amounts.7

How much AAFCO sets a finished-food minimum of 5.2 mg/kg dry matter; the amount added depends on what the base ingredients supply.4

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

    Riboflavin keeps dogs from running low on B2

    Evidence

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

    In a controlled study of 20 adult dogs, the lowest riboflavin diet worsened a blood marker of deficiency by day 112. Earlier depletion work also found deficiency signs. Supplying enough B2 is a real nutritional job.1,2

  2. Brands say

    Riboflavin protects healthy dogs from eye disease

    Outruns the evidence

    Evidence

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

    Eye lesions improved after riboflavin treatment in 4 dogs with mixed vitamin deficiencies. That report supports treating a shortage; it does not show that extra riboflavin prevents eye disease in adequately fed dogs.3

  3. Brands say

    Extra riboflavin gives dogs a better coat

    Outruns the evidence

    Evidence

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

    One dog kept on a very low riboflavin diet developed dermatitis in a historical depletion experiment. Deficiency can harm skin, but that experiment did not test coat improvement from extra vitamin in adequately fed dogs.2

  4. Owners say

    More riboflavin makes dogs more energetic

    Outruns the evidence

    Evidence

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

    Riboflavin helps enzymes process food, but the 20-dog requirement study measured vitamin status, not activity or stamina. Correcting a shortage matters; adding more to an adequate diet has no demonstrated energy benefit.1,7

Straight answers

What owners ask

  1. Q01

    Is it just filler?

    No

    It supplies an essential vitamin at a small dose. AAFCO places vitamins among the minor ingredients on a label and sets a riboflavin minimum for complete dog food. Its low weight is expected.4,8

  2. Q02

    Does its low position mean too little?

    No

    Ingredients are ordered by weight, while vitamin adequacy depends on the finished food. Read the nutritional adequacy statement for your dog's life stage; the ingredient list cannot tell you the final riboflavin level.8,9

Who uses it

Brands, best sellers and the company it keeps

Top brands, by foods that list it

  1. Purina 180 / 185
  2. Blue 168 / 186
  3. Royal Canin 158 / 160
  4. Hill's 114 / 116
  5. Wellness 94 / 118
  6. Merrick 94 / 107
  7. NutriSource 88 / 91
  8. Nulo 82 / 117
  9. Stella & Chewy's 76 / 85
  10. Nutro 69 / 71

Foods that list it / all the brand's recipes we track.

Plus 81 more brands.

Amazon best sellers that list it

  1. #1 Blue Life Protection Formula Adult Chicken and Brown Rice Recipe Dry Dog Food
  2. #2 Purina One SmartBlend Adult Dog Lamb & Rice Formula Dry Dog Food
  3. #3 Purina Pro Plan Adult Complete Essentials Shredded Blend Chicken & Rice Formula Dry Dog Food
  4. #4 Hill’s Science Diet Light Small & Mini Chicken Recipe Dry Dog Food
  5. #5 Blue Life Protection Formula Adult Small Breed Chicken and Brown Rice Recipe Dry Dog Food
  6. #6 Hill’s Science Diet Adult Sensitive Stomach & Skin Chicken Recipe Dry Dog Food
  7. #7 Stella & Chewy’s Marie’s Magical Dinner Dust Cage-Free Chicken Recipe Freeze-Dried Raw Dog Food Topper
  8. #8 Diamond Naturals Skin & Coat Formula All Life Stages Salmon & Potato Formula Dry Dog Food

Rank on Amazon's dog food best seller list, checked October 2026.

Usually listed with, share of the foods that list it

  1. Chicken 43%
  2. Mixed Tocopherols 38%
  3. Natural Flavor 35%
  4. Chicken Fat 34%
  5. Peas 30%
  6. Flaxseed 27%
  7. Chicken Meal 26%
  8. Brown Rice 23%
  9. Carrots 18%
  10. Sweet Potatoes 16%
  11. Dried Plain Beet Pulp 16%
  12. Potatoes 15%

On the shelf

Foods that list Riboflavin

2,640 foods in our catalog list it. These 60 list it highest on the label.

Grandma Lucy’s Organic Banana & Sweet Potato Dog Food TopperGrandma Lucy'sGrandma Lucy’s Organic Banana & Sweet Potato Dog Food TopperTopper // No. 1 on the labelGrandma Lucy’s Organic Apple Dog Food TopperGrandma Lucy'sGrandma Lucy’s Organic Apple Dog Food TopperTopper // No. 1 on the labelPurina Beyond Mixers+ Immune Support Chicken Bone Broth Dog Food TopperPurinaPurina Beyond Mixers+ Immune Support Chicken Bone Broth Dog Food TopperTopper // No. 2 on the labelEvanger’s Super Premium Heritage Classic Chicken & Rice Dog Food TopperEvanger'sEvanger’s Super Premium Heritage Classic Chicken & Rice Dog Food TopperTopper // No. 5 on the labelDave’s Pet Food Restricted Diet Sodium Wet Dog FoodDave's Pet FoodDave’s Pet Food Restricted Diet Sodium Wet Dog FoodWet // No. 6 on the labelEvanger’s Grain Free Braised Beef Chunks with Gravy - packed by hand! Wet Dog FoodEvanger'sEvanger’s Grain Free Braised Beef Chunks with Gravy - packed by hand! Wet Dog FoodWet // No. 6 on the labelTruDog Elevate Smoky BBQ Stew Grain Free Shredded Chicken Stew w/ Sweet Potat Wet Dog FoodTruDogTruDog Elevate Smoky BBQ Stew Grain Free Shredded Chicken Stew w/ Sweet Potat Wet Dog FoodWet // No. 7 on the labelBixbi Rawbble Grain-Free Freeze-Dried Dog FoodBIXBIBixbi Rawbble Grain-Free Freeze-Dried Dog FoodFreeze-Dried // No. 7 on the labelAgainst the Grain The Good Egg - Steak ‘n Egg Wet Dog FoodAgainst the GrainAgainst the Grain The Good Egg - Steak ‘n Egg Wet Dog FoodWet // No. 7 on the labelAgainst the Grain The Good Egg - Bacon N Eggs Scramble Wet Dog FoodAgainst the GrainAgainst the Grain The Good Egg - Bacon N Eggs Scramble Wet Dog FoodWet // No. 7 on the labelHalo Elevate Smoky BBQ Stew Grain Free Shredded Chicken Stew w/ Sweet Potat Wet Dog FoodHaloHalo Elevate Smoky BBQ Stew Grain Free Shredded Chicken Stew w/ Sweet Potat Wet Dog FoodWet // No. 7 on the labelZignature Inception Chicken Recipe Food Can Wet Dog FoodZignatureZignature Inception Chicken Recipe Food Can Wet Dog FoodWet // No. 7 on the label
Show 48 more
Grandma Lucy’s Organic Pumpkin Dog Food TopperGrandma Lucy'sGrandma Lucy’s Organic Pumpkin Dog Food TopperTopper // No. 1 on the labelGrandma Lucy’s Organic Blueberry Dog Food TopperGrandma Lucy'sGrandma Lucy’s Organic Blueberry Dog Food TopperTopper // No. 1 on the labelEvanger’s Heritage Classic Lamb & Rice Dinner Wet Dog FoodEvanger'sEvanger’s Heritage Classic Lamb & Rice Dinner Wet Dog FoodWet // No. 6 on the labelEvanger’s Roasted Chicken Drummet Dinner - packed by hand! Grain-Free Wet Dog FoodEvanger'sEvanger’s Roasted Chicken Drummet Dinner - packed by hand! Grain-Free Wet Dog FoodWet // No. 6 on the labelEvanger’s EVX Restricted Diet: Weight Management Wet Dog FoodEvanger'sEvanger’s EVX Restricted Diet: Weight Management Wet Dog FoodWet // No. 6 on the labelEvanger’s Heritage Classic Senior & Weight Management Wet Dog FoodEvanger'sEvanger’s Heritage Classic Senior & Weight Management Wet Dog FoodWet // No. 7 on the labelEvanger’s Super Premium EVX Restricted Diet: Skin & Coat Wet Dog FoodEvanger'sEvanger’s Super Premium EVX Restricted Diet: Skin & Coat Wet Dog FoodWet // No. 7 on the labelCesar Home Delights Hearty Chicken & Noodle Dinner in Sauce Wet Dog FoodCesarCesar Home Delights Hearty Chicken & Noodle Dinner in Sauce Wet Dog FoodWet // No. 7 on the labelEvanger’s Chunky Chicken Casserole - packed by hand! Wet Dog FoodEvanger'sEvanger’s Chunky Chicken Casserole - packed by hand! Wet Dog FoodWet // No. 8 on the labelEvanger’s EVX Restricted Diet: Digestion Bland Diet Wet Dog FoodEvanger'sEvanger’s EVX Restricted Diet: Digestion Bland Diet Wet Dog FoodWet // No. 8 on the labelEvanger’s Grain Free; Super Premium Chicken Dinner Wet Dog FoodEvanger'sEvanger’s Grain Free; Super Premium Chicken Dinner Wet Dog FoodWet // No. 8 on the labelZignature Inception Pork Recipe Food Can Wet Dog FoodZignatureZignature Inception Pork Recipe Food Can Wet Dog FoodWet // No. 8 on the labelNatural Balance Platefulls Tender Carrot, Potato & Beef Recipe Wet Dog FoodNatural BalanceNatural Balance Platefulls Tender Carrot, Potato & Beef Recipe Wet Dog FoodWet // No. 8 on the labelPurina Pro Plan Sport Adult High Protein Beef & Bison Entrée Classic Wet Dog FoodPurinaPurina Pro Plan Sport Adult High Protein Beef & Bison Entrée Classic Wet Dog FoodWet // No. 8 on the labelZignature Inception Pork Formula Dry Dog FoodZignatureZignature Inception Pork Formula Dry Dog FoodDry // No. 8 on the labelWysong Archetype Burgers Freeze-Dried Raw Dog FoodWysongWysong Archetype Burgers Freeze-Dried Raw Dog FoodFreeze-Dried // No. 8 on the labelWellness Core 95% Turkey & Spinach Grain-Free Wet Dog FoodWellnessWellness Core 95% Turkey & Spinach Grain-Free Wet Dog FoodWet // No. 9 on the labelWellness Core 95% Chicken & Broccoli Grain-Free Wet Dog FoodWellnessWellness Core 95% Chicken & Broccoli Grain-Free Wet Dog FoodWet // No. 9 on the labelEvanger’s Grain Free LID Venison + Beef Dinner Wet Dog FoodEvanger'sEvanger’s Grain Free LID Venison + Beef Dinner Wet Dog FoodWet // No. 9 on the labelZignature Essence LIR Landfowl Recipe Food Can Grain-Free Wet Dog FoodZignatureZignature Essence LIR Landfowl Recipe Food Can Grain-Free Wet Dog FoodWet // No. 9 on the labelZignature Inception Fish Recipe Food Can Wet Dog FoodZignatureZignature Inception Fish Recipe Food Can Wet Dog FoodWet // No. 9 on the labelNatural Balance Platefulls Savory Duck & Pumpkin Recipe Wet Dog FoodNatural BalanceNatural Balance Platefulls Savory Duck & Pumpkin Recipe Wet Dog FoodWet // No. 9 on the labelThe Honest Kitchen Tender Turkey One Pot Stew Wet Dog FoodThe Honest KitchenThe Honest Kitchen Tender Turkey One Pot Stew Wet Dog FoodWet // No. 9 on the labelThe Honest Kitchen Slow Cooked Chicken One Pot Stew Wet Dog FoodThe Honest KitchenThe Honest Kitchen Slow Cooked Chicken One Pot Stew Wet Dog FoodWet // No. 9 on the labelPurina Pro Plan Adult 7+ Senior Complete Essentials Chicken & Rice Entrée Classic Wet Dog FoodPurinaPurina Pro Plan Adult 7+ Senior Complete Essentials Chicken & Rice Entrée Classic Wet Dog FoodWet // No. 9 on the labelZignature Select Cuts Turkey Formula with Super Grains Dry Dog FoodZignatureZignature Select Cuts Turkey Formula with Super Grains Dry Dog FoodDry // No. 9 on the labelZignature Inception Fish Formula Dry Dog FoodZignatureZignature Inception Fish Formula Dry Dog FoodDry // No. 9 on the labelWysong Fundamentals Dry Dog FoodWysongWysong Fundamentals Dry Dog FoodDry // No. 9 on the labelGather Free Acres Organic Free-Run Chicken Recipe for Adult Dogs Grain-Free Dry Dog FoodGatherGather Free Acres Organic Free-Run Chicken Recipe for Adult Dogs Grain-Free Dry Dog FoodDry // No. 9 on the labelPurina Beneful Chicken & Carrots Loaf Wet Dog FoodPurinaPurina Beneful Chicken & Carrots Loaf Wet Dog FoodWet // No. 10 on the labelMerrick Fresh Selects Turkey & Brown Rice Fresh Frozen Dog FoodMerrickMerrick Fresh Selects Turkey & Brown Rice Fresh Frozen Dog FoodFrozen // No. 10 on the labelMerrick Fresh Selects Chicken & Brown Rice Fresh Frozen Dog FoodMerrickMerrick Fresh Selects Chicken & Brown Rice Fresh Frozen Dog FoodFrozen // No. 10 on the labelDave’s Pet Food Bland Diet Pouches Dave’s Bland Duck & Pumpkin Pouch Recipe for Dogs / 10 Pack - Pou Wet Dog FoodDave's Pet FoodDave’s Pet Food Bland Diet Pouches Dave’s Bland Duck & Pumpkin Pouch Recipe for Dogs / 10 Pack - Pou Wet Dog FoodWet // No. 10 on the labelGravy Train Ground Dinner With Chicken Wet Dog FoodGravy TrainGravy Train Ground Dinner With Chicken Wet Dog FoodWet // No. 10 on the labelEvanger’s EVX Restricted Diet: Hip & Joint and Senior Support Grain-Free Wet Dog FoodEvanger'sEvanger’s EVX Restricted Diet: Hip & Joint and Senior Support Grain-Free Wet Dog FoodWet // No. 10 on the labelZignature Essence LIR Ranch Recipe Food Can Grain-Free Wet Dog FoodZignatureZignature Essence LIR Ranch Recipe Food Can Grain-Free Wet Dog FoodWet // No. 10 on the labelZignature Original Food Lamb Formula Grain-Free Wet Dog FoodZignatureZignature Original Food Lamb Formula Grain-Free Wet Dog FoodWet // No. 10 on the labelZignature Original Food Turkey Formula Grain-Free Wet Dog FoodZignatureZignature Original Food Turkey Formula Grain-Free Wet Dog FoodWet // No. 10 on the labelThe Honest Kitchen Roasted Beef One Pot Stew Wet Dog FoodThe Honest KitchenThe Honest Kitchen Roasted Beef One Pot Stew Wet Dog FoodWet // No. 10 on the labelOpen Farm Icelandic Cod & Herring Grain-Free Wet Dog FoodOpen FarmOpen Farm Icelandic Cod & Herring Grain-Free Wet Dog FoodWet // No. 10 on the labelPedigree Chopped Ground Dinner Adult Pouch, Chicken Wet Dog FoodPedigreePedigree Chopped Ground Dinner Adult Pouch, Chicken Wet Dog FoodWet // No. 10 on the labelPedigree High Protein Chopped Ground Dinner Can, Chicken & Duck Wet Dog FoodPedigreePedigree High Protein Chopped Ground Dinner Can, Chicken & Duck Wet Dog FoodWet // No. 10 on the labelInstinct Freshly Crafted Meals Cage-Free Chicken Recipe Wet Dog FoodInstinctInstinct Freshly Crafted Meals Cage-Free Chicken Recipe Wet Dog FoodWet // No. 10 on the labelPurina Beneful Freshly Prepared Stews Turkey Dinner with Spinach and Ditalini Pasta in Gravy Wet Dog FoodPurinaPurina Beneful Freshly Prepared Stews Turkey Dinner with Spinach and Ditalini Pasta in Gravy Wet Dog FoodWet // No. 10 on the labelPurina Beneful Freshly Prepared Stews Chicken Dinner with Carrots and Rice in Gravy Wet Dog FoodPurinaPurina Beneful Freshly Prepared Stews Chicken Dinner with Carrots and Rice in Gravy Wet Dog FoodWet // No. 10 on the labelBlue Wilderness Wild Meals Chicken & Sweet Potato Wet Dog FoodBlueBlue Wilderness Wild Meals Chicken & Sweet Potato Wet Dog FoodWet // No. 10 on the labelFirstMate Pacific Ocean Fish Weight Control Formula Grain-Free Dry Dog FoodFirstMateFirstMate Pacific Ocean Fish Weight Control Formula Grain-Free Dry Dog FoodDry // No. 10 on the labelFirstMate Pacific Ocean Fish Large Breed Formula Grain-Free Dry Dog FoodFirstMateFirstMate Pacific Ocean Fish Large Breed Formula Grain-Free Dry Dog FoodDry // No. 10 on the label

On labels as

Other names for this

Manufacturers do not all use the same wording. These all mean the same thing.

Riboflavin Supplement

Sources

What we read

Checked October 1, 2026.

  1. 1 The Riboflavin Requirement of Adult Dogs at Maintenance Is Greater than Previous Estimates The Journal of Nutrition, 1996 // Journal
  2. 2 The Bacterial Assay of Riboflavin in the Urine and Tissues of Normal and Depleted Dogs and Rats Public Health Reports, 1940 // Journal
  3. 3 The Natural Occurrence of Riboflavin Deficiency in the Eyes of Dogs Science, 1943 // Journal
  4. 4 AAFCO Dog Food Nutrient Profiles AAFCO, 2013 // Regulator
  5. 5 Safety and efficacy of feed additives consisting of vitamin B2 (98%) and vitamin B2 (80%) produced with Bacillus subtilis CGMCC 7.449 for all animal species (Chifeng Pharmaceutical Co., Ltd.) EFSA Journal, 2025 // Journal
  6. 6 931. Food colour: Riboflavin from genetically modified Bacillus subtilis World Health Organization, 1999 // Government
  7. 7 Production of Vitamin B2 (Riboflavin) by Microorganisms: An Overview Frontiers in Bioengineering and Biotechnology, 2020 // Journal
  8. 8 What's in the Ingredients List? AAFCO, n.d. // Regulator
  9. 9 Complete and Balanced Pet Food U.S. Food and Drug Administration, n.d. // Government
  10. 10 Retrospective surveillance of viable Bacillus cereus group contaminations in commercial food and feed vitamin B2 products sold on the Belgian market using whole-genome sequencing Frontiers in Microbiology, 2023 // Journal
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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