Vitamin B for Dogs: Complete Guide 2025

Did you know that B vitamins are essential for your dog's energy, nervous system, and coat health? In this complete 2025 guide to vitamin B for dogs, we explain what it's used for, which foods contain it, how to identify a deficiency, and whether it can really help your furry friend with stress or anxiety. We also answer frequently asked questions like what the proper dosage is, whether it's safe to give human vitamin B supplements, and what functional alternatives exist to easily integrate it into their daily diet.

At Waggy's, we know that every decision you make about your dog's health matters. That's why we develop expert-backed content and products that are safe and formulated to support every stage of their life with functional ingredients like biotin, a key ingredient in coat care. Because when it comes to their well-being, they deserve the best.

What is vitamin B?

Vitamin B is not just one, but a group of water-soluble vitamins that work together to support multiple bodily functions. The main B vitamins that affect dogs are:

• B1 (Thiamine)

• B2 (Riboflavin)

• B3 (Niacin)

• B5 (Pantothenic acid)

• B6 (Pyridoxine)

• B7 (Biotin)

• B9 (Folic Acid)

• B12 (Cobalamin)

These vitamins are not stored in large quantities in the body, so they should be part of the dog's daily diet.

What does B complex do in dogs?

The B complex performs essential functions to:

• Energy production: Helps metabolize proteins, carbohydrates and fats.

• Healthy nervous system: Supports cognitive and neuromuscular function.

• Skin and coat: Biotin (B7) in particular helps to keep the skin hydrated and the coat shiny.

• Immune and digestive support: Some B vitamins help produce red blood cells and maintain intestinal flora in balance.

What happens if a dog doesn't get enough vitamin B? Symptoms

Symptoms of vitamin B deficiency in dogs:

• Loss of appetite

• Lethargy or fatigue

• Skin problems: redness, dandruff, itching

• Loss of hair

• Seizures or neurological problems (in severe cases)

• Difficulty gaining weight or muscle weakness

Prolonged deficiency can seriously affect a dog's quality of life, so it's important to identify these signs and take action early.

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Foods rich in vitamin B for dogs

• Beef or chicken liver: Liver is one of the foods most concentrated in B vitamins, especially B12, B2, B3, and B5. It also contains iron and high-quality protein. It helps maintain energy, improves cellular oxygenation, and supports the immune system. It should be offered cooked and unseasoned as an occasional side dish.

• Fish (salmon, tuna, sardines): These are a source of B3, B6, B12, and biotin (B7). They improve neurological health and coat health. The omega-3s present also have anti-inflammatory properties. You can cook fish without salt or bones, or choose natural dog treats like Waggy's Tuna and Salmon Bites, which combine real protein with visible coat benefits.

• Eggs: Rich in B2, B5, and biotin (B7), they strengthen metabolism, skin, and hair. Biotin promotes hair growth and strengthens nails. They should always be served cooked.

• Vegetables like spinach and broccoli: They provide fiber for dogs and vitamins such as B6, B9 (folic acid), and biotin. They help improve digestion and offer a natural antioxidant boost. They should be offered steamed and in small quantities.

• Whole grains such as oats and brown rice: They contain B1, B3, and B5. Oats are gentle on the digestive system and contain small amounts of biotin. Brown rice promotes good digestion. Both should be served well cooked and without seasoning.

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Other safe vitamin B alternatives for dogs

• Functional snacks enriched with biotin: A practical and delicious way to supplement vitamin B is with functional treats, especially those containing biotin (B7). This nutrient is essential for healthy skin, a shiny coat, and strong nails. Dog supplements like Waggy's SHINE soft treats are formulated with natural ingredients, including biotin, making them a practical option for supporting coat health, especially during shedding periods or weather changes.

• Natural treats with vitamin B-rich ingredients: Treats that include fish and vegetables are natural sources of B vitamins. For example, Waggy's Bites Tuna and Sweet Potato Treats combine high-quality protein with nutrient-dense vegetables, providing a natural source of B vitamins. These dog treats support overall health by promoting a healthy coat and skin.

• Specific veterinary supplements: When a dog's nutritional requirements are higher—due to age, illness, pregnancy, or recovery—chewable or liquid supplements may be helpful. Veterinary formulas are available that combine B vitamins, including biotin, with minerals and antioxidants for balanced nutritional support. They should be administered under veterinary supervision.

• Premium Veterinarian-Formulated Diets: Some high-end pet foods include B-complex vitamins and biotin. These diets are designed to meet daily requirements without additional supplements. It's a good idea to check the nutrition label to verify adequate levels of B-complex vitamins.

Tips for providing vitamin B to your dog

• Always consult your veterinarian: Before changing your dog's diet or adding supplements, your veterinarian can determine if your dog needs vitamin B and how to administer it properly.

• Prefer natural sources or dog-specific formulations: Opt for natural foods or supplements designed for dogs, such as Waggy's SHINE snacks with biotin and safe ingredients.

• Avoid duplicating uncontrolled sources of vitamin B: If your dog is already eating quality balanced food or functional snacks, avoid adding more supplements without professional guidance.

What is the recommended dose?

There is no single universal dosage. It depends on the dog's size, age, health, and diet. A complete dog food usually covers these needs. If supplementation is needed, a veterinarian can prescribe a specific amount, such as micrograms of biotin per day. Don't improvise.

What are the contraindications of B complex in dogs?

B vitamins are water-soluble, and excess amounts are usually eliminated in the urine. However, high, sustained doses can cause diarrhea, abdominal pain, or allergic reactions. In dogs with kidney or liver problems, the use of supplements should be carefully evaluated.

Can I give my dog ​​human vitamin B supplements?

Not recommended. Although some ingredients are compatible, the dosages and ingredients may not be safe for dogs. It's best to use supplements specifically formulated for them, such as those from Waggy's, which are also easy to administer.

Does vitamin B help dogs with stress and anxiety?

Some B vitamins, such as B1 (thiamin), B6, and B12, are linked to the proper functioning of the nervous system and can contribute to a dog's emotional balance as part of a holistic approach. Although they are not a direct treatment for stress, proper nutrition with sufficient B vitamins can be part of caring for their overall well-being.

Conclusion

Vitamin B plays an important role in various physical and neurological functions in dogs and can be a great ally in their overall health. Whether through diet or with the support of functional supplements like Waggy's SHINE treats, you can make a real difference in their vitality, skin, and coat. At Waggy's, we're committed to providing you with practical, natural, and safe solutions that help you care for your best friend with the peace of mind that comes from knowing you're doing the right thing. Because their health is also your happiness.