Best Dog Iron Supplements (2026) – Top 10 Reviewed
Iron is an essential mineral that plays a critical role in your dog’s blood health, energy levels, and overall vitality. Dogs with iron deficiency can suffer from anemia, fatigue, weakness, and a weakened immune system. Whether your vet has recommended iron supplementation for a specific condition or you’re looking to support your dog’s blood health proactively, finding the right iron supplement matters. In this guide, we’ve reviewed the best iron supplements for dogs to help you choose the safest and most effective option.
Our Top Picks at a Glance
- Best Overall: Nutrition Strength Iron for Dogs – Comprehensive formula with vitamin C, folate, and B12
- Best Value: Liqui-Tinic 4X Vitamin-Iron Supplement – Trusted liquid formula for all pets
- Best Premium: Dr. Oscar 3in1 Blood Aid for Dogs – Multi-system blood health support
Quick Comparison
| Product | Key Ingredients | Form | Servings | Best For |
|---|---|---|---|---|
| Nutrition Strength Iron for Dogs | Iron 11mg, Vitamin C, Folate, B12 | Chewable Tablets | 120 | Overall blood health |
| Liquid Iron Supplement for Dogs | Polysaccharide Iron, Folate, B12 | Liquid | 2 oz | Easy absorption |
| Liquid Iron with Vitamin C and B12 | Polysaccharide Iron, Vitamin C, B12 | Liquid | 2 oz | Picky eaters |
| Iron Supplement for Dogs with CoQ10 | Iron, B12, Beet Root, CoQ10 | Chewable Tablets | 120 | Energy and vitality |
| Liquid Iron Drops for Dogs | Iron, Folate, Vitamin B12 | Liquid Drops | 60 ml | Precise dosing |
| Liqui-Tinic 4X Vitamin-Iron Supplement | Iron, B-Complex, Amino Acids | Liquid | 2 oz | Multi-pet households |
| Dr. Oscar 3in1 Blood Aid for Dogs | Dual-Source Iron, Vitamins, Minerals | Tablets | 120 | Comprehensive blood support |
| Nutrition Strength Blood Support | Iron, B12, Spirulina, Echinacea | Chewable Tablets | 120 | Anemia recovery |
| Horse Health Canine Red Cell | Iron, Vitamins, Minerals | Liquid | 1 Quart | Active and working dogs |
1. Nutrition Strength Iron for Dogs – Best Overall
- Highly rated supplement to support blood health in dogs: 365 day guarantee; if you are not happy with our iron for dogs tablets, simply contact us for a full refund; we want you to be completely satisfied with our premium supplement; as plenty of studies have found that not having enough iron in the body can lead to iron deficiency anemia, our supplement can help ensure that your pet gets sufficient amounts of the vitally important micronutrient
- Stimulate oxygen supply in dogs: Nutrition Strength's premium iron for dogs tablets ensure that your pet gets sufficient amounts of iron, which is an essential element in all living cells; more than 60 percent of the body's iron is found in the red blood cells called hemoglobin and in muscle cells called myoglobin; hemoglobin is responsible for transport of oxygen in the blood from the lungs to the tissues, while myoglobin accepts, stores, transports and releases oxygen
- Promote red blood cell formation: the production of red blood cells is the single largest user of iron in the body; iron acts as a cofactor for a number of enzymes including those required for cell division during red blood cell formation; folate and vitamin B12, key ingredients in our iron supplement or dogs, are also needed for red blood cells to form and grow; a lack of folate can result in folate deficiency anemia, while vitamin B12 deficiency can lead to megaloblastic anemia
- Iron supplement for anemic dogs of all ages, shapes and sizes: research has shown that iron deficiency in the body limits the synthesis of hemoglobin and reduces the production of red blood cells in the bone marrow, resulting in anemia; as cellular energy metabolism is reliant on oxygen, anemia has a wide range of negative consequences; our iron pills for dogs are carefully formulated to supply the vital nutrient and help keep your pet healthy and happy
- Made in the USA: Nutrition Strength's iron for dogs to support blood health, promote blood cell formation and oxygen supply, iron supplement for anemic dogs with vitamin C, folate and vitamin B12 is human grade; our premium canine iron tablets meet the strictest animal supplement manufacturing guidelines, to guarantee your pet's safety, and are made with carefully selected, high quality ingredients for optimal results
Nutrition Strength delivers a comprehensive iron formula that pairs ferrous fumarate with the key vitamins needed for optimal iron absorption.
Each chewable tablet contains 11mg of iron as ferrous fumarate, along with 40mg of vitamin C to enhance absorption, 50mcg of vitamin B12, 300mcg of folate, 50mg of beet root powder, and 5mg of Coenzyme Q10. This thoughtful combination addresses not just iron deficiency but the full spectrum of nutrients needed for healthy red blood cell production. The tasty chewable format makes daily dosing easy, and with 120 tablets per bottle, you get a generous supply. Made in the USA with human-grade ingredients and backed by a 365-day guarantee.
What We Like
- Complete formula with vitamin C, B12, folate, and CoQ10 for enhanced absorption
- 120 chewable tablets provide excellent value
- Human-grade, USA-made with a 365-day money-back guarantee
What Could Be Better
- Iron content (11mg) may be low for severely anemic dogs needing higher doses
- Tablet form may not appeal to all dogs
Bottom Line: Nutrition Strength Iron for Dogs is the most well-rounded iron supplement available, combining iron with all the supporting nutrients your dog needs for optimal blood health.
2. Liquid Iron Supplement for Dogs – Best Liquid Formula
- 🐕 Liquid Iron Supplement is specially formulated to aid dogs suffering from blood loss and lethargy caused by iron deficiency. Provide your beloved pets with the essential iron they need to stay active and healthy.
- 🐕 By supporting red blood cell production and enhancing oxygen delivery, this iron supplements for anemia dog reduces fatigue and improves overall vitality. Witness your dog's energy soar, bringing back joy and playfulness
- 🐕 Iron Supplement for Pets, Iron-enriched pet supplement made with potent natural and other high-quality ingredients. This helps improve their energy levels, vitality, and overall well-being quickly.
- 🐕 Our advanced formula ensures rapid absorption of iron, ensuring that your pets receive the maximum benefit from each dose.
- 🐕 Liquid Iron Supplement is easy to take and tastes great.Simply mix it into your dogs food to stimulate their appetite and ensure they receive the necessary iron intake.
This veterinarian-formulated liquid iron uses a polysaccharide iron complex for fast absorption with minimal stomach upset.
The polysaccharide iron complex in this supplement is designed to be easy to digest and quickly absorbed, reducing the common side effects like stomach pain, irritation, and constipation that many iron supplements cause. It also includes folate and vitamin B12 to support red blood cell formation. The liquid form is easy to administer by mixing into food or giving directly by mouth, making it ideal for dogs who won’t eat tablets. The 2-ounce bottle is convenient for daily dosing.
What We Like
- Polysaccharide iron complex is gentle on the stomach
- Liquid form absorbs quickly and is easy to administer
- Includes folate and B12 for comprehensive blood support
What Could Be Better
- Small 2-ounce bottle may not last long for larger dogs
- Must be refrigerated after opening
Bottom Line: If your dog has a sensitive stomach or refuses tablets, this liquid iron supplement offers fast-absorbing, gentle iron support that’s easy to give.
3. Liquid Iron with Vitamin C and B12 – Best for Picky Eaters
- 🍒Liquid Iron is a specially formulated supplement designed for dogs of all ages to address nutritional deficiencies in your furry friend.
- 🍒The liquid anemia supplement contains an easily digestible polysaccharide iron complex to ensure the overall health of dogs, and minimize stomach pain, irritation and constipation so that pets can live a healthy life.
- 🍒Our supplement iron is full of polysaccharide iron that supports the production of red blood cells and hemoglobin levels.
- 🍒Anemia supplements for your dog's protection provide iron-rich nutritional support it is an essential way to treat anemia and ensure the health and happiness of your pet.
- 🍒Contains no Artificial Preservatives.Iron Anemia Supplements can be given directly to your pet by mouth, mix it with their food, or add it to their water.
Combining polysaccharide iron with vitamin C for enhanced absorption, this liquid supplement is designed for dogs who refuse pills.
This liquid iron supplement features a high-potency polysaccharide iron complex paired with vitamin C and B12. The vitamin C not only boosts iron absorption but also provides additional antioxidant support. The great-tasting formula can be mixed directly into your dog’s food or water, making supplementation stress-free for both you and your pet. It supports red blood cell production, boosts energy, and helps improve overall vitality in dogs suffering from iron deficiency or blood loss.
What We Like
- Vitamin C inclusion enhances iron absorption significantly
- Pleasant taste makes mixing with food easy
- Suitable for dogs of all ages and sizes
What Could Be Better
- Dosing requires careful measurement based on body weight
- Some dogs may not like the taste when given directly
Bottom Line: This liquid iron with vitamin C is a smart choice for picky eaters who need iron supplementation without the struggle of pills and tablets.
4. Iron Supplement for Dogs with CoQ10 – Best Multivitamin Iron
- Iron Supplement for Dogs with Anemia: Formulated with essential iron for dogs, Vitamin B12, Folate, and Vitamin C, this premium dog iron supplement helps support healthy red blood cell production and hemoglobin formation, addressing key needs for dogs with anemia.
- Gentle, High-Absorption Formula for Sensitive Stomachs: Help soothe the stomach and enhance absorption. This makes it an ideal iron supplement for dogs that is easy on digestion.
- Comprehensive Multivitamin for Dogs Support: Combines Iron, B Vitamins (including B12 for dogs), Beet Root, and Coenzyme Q10 to provide broad nutritional support for blood health, energy, and overall vitality—acting like a targeted best multivitamin for dogs.
- Tasty & Easy Chewable Tablet: Making daily supplementation simple. This easy-to-administer iron paws supplement alternative is a convenient chewable, perfect for picky eaters.
- Trusted Quality: Made in USA, Vet-Formulated: Created with high-quality, human grade ingredients and produced following strict U.S. standards. Our vet-formulated recipe provides a reliable anemia supplement for dogs, offering peace of mind for pet owners seeking pet dog supplies they can trust.
This comprehensive formula combines iron with beet root, CoQ10, and B vitamins to act like a targeted multivitamin for blood health.
Going beyond basic iron supplementation, this chewable tablet delivers iron alongside vitamin B12, folate, beet root powder, and Coenzyme Q10 for broad nutritional support. The beet root provides natural nitrates that support healthy blood flow, while CoQ10 supports cellular energy production. The gentle, high-absorption formula is designed for dogs with sensitive stomachs, and the vet-formulated recipe uses human-grade ingredients made under strict US manufacturing standards.
What We Like
- Beet root and CoQ10 provide added circulatory and energy support
- Gentle formula designed for sensitive stomachs
- Vet-formulated with human-grade ingredients
What Could Be Better
- Newer product with fewer customer reviews
- May overlap with existing multivitamin supplements
Bottom Line: If you want an iron supplement that doubles as a blood health multivitamin, this comprehensive formula covers all the bases with quality ingredients.
5. Liquid Iron Drops for Dogs – Best for Precise Dosing
- Dog Liquid Iron Support - Our dog supplement for anemic dogs may help with iron levels and deficiency, formation of red blood cell, oxygen in hemoglobin. It may helps improve their energy levels, vitality, and assists dogs healthy, increases energy, and enhances athletic performance.
- Safe Ingredients for Dogs - Our dog supplement drops is in liquid form which for absorbing faster and rapidly provides elemental iron, our dog iron drops formula with active ingredient Iron and other ingredients likes Folate and Vitamin B12.
- Energy levels & Vitality - Iron and vitamin deficiencies can significantly lower the red blood cells and result in anemia, weakness and lowered immunity. Our liquid iron drops works by increasing hemoglobin levels, and transporting and utilizing oxygen to cells of the body.
- Iron supplements for dogs - Dogs with iron deficiency anemia and those suffering from chronic blood loss, iron supplements drops may supports immunity, energy, synthesis of hemoglobin and red blood cells production for dogs, including dogs with blood loss.
- Usage & Notes - The dog iron drops with the glass dropper and you can apply to dog's food 2 times per day. Puppies with 0.5 dropper (0.5 ml) per 5 lbs of body weight. Dogs with 1 dropper (1 ml) per 10lbs of body weight. Note: Because the iron supplement can interact with other medications, always consult your vet before supplementing your dog's diet with iron.
These caramel-flavored iron drops come with a glass dropper for precise, weight-based dosing that’s perfect for small dogs and puppies.
This 60ml bottle of liquid iron drops features a convenient glass dropper that allows you to measure exact doses based on your dog’s body weight. Puppies get 0.5 ml per 5 lbs of body weight, while adult dogs receive 1 ml per 10 lbs. The formula includes iron, folate, and vitamin B12 to support blood health and combat anemia. The caramel flavor helps mask the metallic taste of iron, making it more palatable for finicky dogs.
What We Like
- Glass dropper allows precise weight-based dosing
- Caramel flavor helps mask metallic iron taste
- Suitable for puppies and small breeds needing exact doses
What Could Be Better
- Caramel flavor may not appeal to every dog
- Requires twice-daily administration for best results
Bottom Line: These iron drops are ideal if you need precise dosing control, especially for puppies or smaller breeds where accurate measurement is critical.
6. Liqui-Tinic 4X Vitamin-Iron Supplement – Best Multi-Pet Option
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A time-tested flavored liquid supplement that provides iron, vitamins, amino acids, and B-complex for dogs, cats, puppies, and kittens alike.
Liqui-Tinic 4X has been a trusted name in veterinary nutrition for years. This flavored liquid supplement delivers iron along with essential vitamins, amino acids, and B-complex nutrients to support overall health and vitality. It’s formulated for use across multiple species including dogs, cats, puppies, and kittens, making it incredibly versatile for multi-pet households. The 2-ounce bottle is easy to store and administer, and the palatable flavor makes dosing straightforward.
What We Like
- Proven formula trusted by veterinarians for years
- Works for dogs, cats, puppies, and kittens
- Includes B-complex vitamins and amino acids for comprehensive support
What Could Be Better
- Small 2-ounce bottle runs out quickly with larger dogs
- Some pets may not enjoy the flavor
Bottom Line: Liqui-Tinic 4X is a reliable, vet-trusted iron supplement that works for the entire household, making it the most practical choice for homes with multiple pets.
7. Dr. Oscar 3in1 Blood Aid for Dogs – Best Premium
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Dr. Oscar’s 3-in-1 formula provides dual-source iron plus comprehensive support for all three blood cell types, immunity, and energy.
What makes this supplement stand out is its dual-source iron approach combined with a broader mission of supporting overall blood health, not just red blood cells. The formula includes more essential vitamins, minerals, and nutrients than many competitors to support red cells, white cells, and platelets. It also contains important vitamins for iron absorption and provides energy and immune system support. Made in the USA from high-quality, non-GMO ingredients without soy, gluten, wheat, or artificial additives.
What We Like
- Dual-source iron for optimized absorption and utilization
- Supports all three blood cell types, not just red blood cells
- Clean formula: non-GMO, no soy, gluten, wheat, or artificial ingredients
What Could Be Better
- Premium price point may not fit every budget
- Large tablet size may be challenging for smaller dogs
Bottom Line: Dr. Oscar 3in1 Blood Aid is the most comprehensive blood health supplement available, ideal for dogs who need full-spectrum support beyond basic iron supplementation.
8. Nutrition Strength Blood Support for Dogs – Best for Anemia Recovery
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Specifically designed for dogs with anemia, this blood support formula combines iron with spirulina and echinacea for red blood cell recovery.
Nutrition Strength’s Blood Support supplement is specifically formulated for dogs dealing with anemia. It features high levels of iron alongside vitamin B12, organic spirulina, and echinacea purpurea, all of which have been studied for their roles in red blood cell growth and development. The chewable tablets are suitable for dogs of all ages and sizes, and the formula is made in the USA with carefully selected, high-quality ingredients. It’s an excellent companion supplement during veterinary-supervised anemia treatment.
What We Like
- Specifically targeted for anemia recovery with spirulina and echinacea
- 120 chewable tablets for extended supply
- Made in the USA with high-quality, carefully selected ingredients
What Could Be Better
- Best used under veterinary supervision for anemic dogs
- May not be necessary for dogs without diagnosed blood health issues
Bottom Line: If your dog has been diagnosed with anemia, Nutrition Strength Blood Support provides the targeted nutritional support they need alongside veterinary care.
9. Horse Health Canine Red Cell – Best for Active and Working Dogs
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Canine Red Cell is a comprehensive liquid vitamin-iron-mineral supplement designed for puppies, active dogs, seniors, and pregnant dogs.
Originally developed for high-performance animals, Canine Red Cell delivers a potent combination of iron, vitamins, and minerals in a palatable liquid form. The 1-quart bottle provides exceptional value and lasting supply, especially for larger breeds. It’s particularly well-suited for puppies in growth phases, active or working dogs with high iron demands, senior dogs who need nutritional support, and pregnant or nursing dogs. The liquid format mixes easily into food for daily supplementation.
What We Like
- Large 1-quart bottle offers incredible value for long-term use
- Comprehensive vitamin-iron-mineral formula in one supplement
- Ideal for working dogs, show dogs, and dogs with high energy demands
What Could Be Better
- Large bottle size may be overkill for small dogs or short-term use
- Strong taste may require gradual introduction
Bottom Line: Canine Red Cell is the top choice for active, working, and performance dogs who need robust iron and mineral supplementation to keep up with their demanding lifestyles.
How to Choose the Best Iron Supplement for Your Dog
Selecting the right iron supplement for your dog requires careful consideration of several important factors. Iron supplementation should always be done under veterinary guidance, as too much iron can be just as harmful as too little.
The form of iron matters significantly. Ferrous fumarate and ferrous sulfate are common forms found in tablet supplements, while polysaccharide iron complex is typically used in liquid formulations. Polysaccharide iron is generally gentler on the stomach and better absorbed, making it a good choice for dogs prone to digestive upset. Look for supplements that include vitamin C, as it dramatically improves iron absorption in the body.
Consider supporting nutrients as well. The best iron supplements don’t just contain iron alone. Look for formulas that include vitamin B12, folate (folic acid), and vitamin C, as these nutrients work synergistically with iron to support red blood cell production. B12 and folate deficiencies can independently cause anemia, so addressing all three nutrients simultaneously provides the most comprehensive support.
Think about your dog’s specific needs and preferences. Liquid supplements tend to absorb faster and are easier to administer to dogs who refuse pills. Chewable tablets are more convenient for daily use and often contain a broader range of supporting nutrients. For precise dosing, especially with puppies or small breeds, liquid drops with measured droppers offer the most accuracy.
Always consult your veterinarian before starting iron supplementation. Iron can interact with other medications and supplements, and excessive iron intake can cause toxicity. Your vet can run blood tests to determine if your dog truly needs iron supplementation and recommend the appropriate dosage for your pet’s specific situation.
Benefits of Iron Supplements for Dogs
Iron is a foundational mineral for your dog’s health, and adequate iron levels are essential for several critical body functions. Understanding these benefits helps you appreciate why iron supplementation can be so important for certain dogs.
The most important role of iron is supporting healthy red blood cell production. Iron is a key component of hemoglobin, the protein in red blood cells that carries oxygen throughout the body. Without sufficient iron, your dog’s body can’t produce enough functional red blood cells, leading to iron deficiency anemia. Symptoms include fatigue, weakness, pale gums, decreased appetite, and reduced exercise tolerance.
Iron also plays a vital role in energy metabolism and muscle function. Myoglobin, an iron-containing protein in muscle cells, stores and transports oxygen for use during physical activity. Dogs who are active, working, or in training may benefit from iron supplementation to maintain peak performance and stamina. Additionally, iron supports immune function by helping immune cells function properly and fight off infections.
For puppies, pregnant dogs, and nursing mothers, iron requirements are especially high. Rapid growth, blood volume expansion during pregnancy, and iron transfer through milk all increase the demand for this essential mineral. Senior dogs may also benefit from supplementation if their iron absorption decreases with age or if they have chronic health conditions that affect iron levels.
Frequently Asked Questions
How do I know if my dog needs an iron supplement?
Common signs of iron deficiency in dogs include pale gums, lethargy, weakness, decreased appetite, rapid breathing, and reduced exercise tolerance. However, these symptoms can also indicate other health issues, so it’s important to have your veterinarian run blood tests to confirm iron deficiency before starting supplementation.
Can I give my dog human iron supplements?
You should not give your dog human iron supplements without veterinary guidance. Human formulations often contain much higher doses than dogs need, and some include additional ingredients like artificial sweeteners (particularly xylitol) that are toxic to dogs. Always use supplements specifically designed for canines or follow your vet’s specific recommendations.
How much iron does my dog need daily?
The recommended iron intake for dogs varies based on age, size, health status, and the specific condition being treated. As a general guideline, healthy adult dogs need about 0.5mg of iron per pound of body weight daily through their diet. Dogs with anemia may need significantly more under veterinary supervision. Always follow your vet’s dosage recommendations.
Can too much iron be harmful to dogs?
Yes, iron toxicity is a serious concern. Excessive iron can cause vomiting, diarrhea, abdominal pain, and in severe cases, organ damage. This is why iron supplementation should always be supervised by a veterinarian who can monitor your dog’s iron levels through blood tests and adjust dosing accordingly.
What foods are naturally high in iron for dogs?
Iron-rich foods that are safe for dogs include lean red meat, liver, sardines, egg yolks, and certain dark leafy greens like spinach. However, dietary iron alone may not be sufficient for dogs with diagnosed deficiency or anemia, which is where supplements become important.
How long should my dog take iron supplements?
The duration of iron supplementation depends on the underlying cause of deficiency. Some dogs may only need short-term supplementation during recovery from illness or surgery, while others with chronic conditions may need ongoing support. Your veterinarian will determine the appropriate timeline based on blood test results and your dog’s progress.
Can iron supplements cause constipation in dogs?
Yes, iron supplements can cause constipation or dark-colored stools in some dogs. Liquid formulations using polysaccharide iron complex tend to be gentler on the digestive system. If your dog experiences constipation, talk to your vet about adjusting the dosage or switching to a different form of iron that’s easier on the stomach.
