10 Best Vitamin B Complex For Dogs of 2025

Tested and Reviewed: Top 10 Vitamin B Complex For Dogs deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Dr. Mercola

Bark & Whiskers Organic Vitamin B Complex - B Vitamins for Energy & Nervous System Support - for Cats & Dogs - USDA Certified - 0.85 oz

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Editor's bottom line:

“This vitamin b complex for dogs is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Daily Energy & Vitality Support: Bark & Whiskers Organic Vitamin B Complex delivers a balanced blend of B vitamins to help maintain energy and endurance in pets*
Complete B Complex Formula: Features the patented PANMOL vitamin B complex including biotin, thiamine, niacin, and riboflavin for broad nutritional support*
Enhanced Absorption with Quinoa: B vitamins are organically bound to organic quinoa seeds using a patented process to help improve bioavailability and benefits*
Ideal for Cats & Dogs: This versatile cat supplement and dog vitamin supports your pet's immune system, nervous system, and overall daily health*
About Bark & Whiskers: We support your pets everyday wellness with veterinarian-formulated products made from clean ingredients

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9.5

WONDER PAWS

Wonder Paws B12 Supplement for Dogs – Vitamin B-12 for All Ages, Sizes & Breeds – Vitamin B12 for Dogs as Superior Methylcobalamin, Cobalamin & Folate (5-MTHF) – 90 Beef Flavored Chewables

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Main Highlights

POWERFUL VITAMIN B12 FOR DOGS: Are you looking for an advanced vitamin B12 supplement for your pet? Wonder Paws uses two forms of vitamin B12, cobalamin and methylcobalamin (methyl B12), which is a highly absorbable form and metabolically active form of B12 to help provide superior absorption. Included is folate (5-MTHF), which works together with vitamin B12 to give your pet superior support. B12 is critical for many metabolic functions and helps support immune health, brain and nervous system, formation of healthy blood cells, protein synthesis and helps replenish low levels of vitamin B12.
TWO SOURCES OF B12: Our tasty beef flavored vitamin B12 chewable tablets for dogs include cobalamin and the methylcobalamin form, so you get the benefits of two powerful forms of vitamin b12 in one supplement. Unlike other B-12 supplements for dogs, we included the methylcobalamin form of B-12 to give your pet superior absorption. In addition to our methylcobalamin for dogs, we included the biologically active form of folate (5-MTHF) which works together with B12 to provide superior health benefits. Give your pet the benefits of B12 and folate today!
WITH FOLATE (5-MTHF): Our oral cobalamin supplement for dogs includes the added benefits of the metabolically active form of folate (5-MTHF). This powerful biologically active folate for dogs helps support normal metabolic function, brain and nerve health, immune system support, protein synthesis and normal blood cell production. Unlike other vitamin b-12 supplements for dogs, we combine our B-12 chewable for dogs with folate to provide a comprehensive formula to support your pets overall health.
FOR ALL AGES, SIZES & BREEDS: Is your pet low on vitamin b12 or need b12 injections? Oral vitamin B12 supplements for dogs may help reduce the need for injections. Our tasty beef flavored chewable tablets are easy to give to pets of all ages, sizes and breeds. Whether your pet has low B12 levels or needs extra support, our oral B12 supplement helps reduce or eliminate the need for B12 injections. Each tasty chewable B12 tablet for dogs can be crushed or given whole to support long-term health in your pet.
NASC CERTIFIED: Wonder Paws is a member of the prestigious National Animal Supplement Council (NASC), which ensures strict quality control standards. Wonder Paws oral cobalamin supplement for dogs is NASC Certified, so you know you are getting a trusted product that adheres to stringent quality controls. Our cobalamin B12 for dogs is formulated for small, medium or large dogs is manufactured in the United States with globally sourced ingredients in an FDA registered and GMP Certified facility.

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9.5

Special Breed

Special Breed Liquid Vitamin B12 for Dogs – Methylcobalamin and 5-MTHF – Boosts Energy, Appetite, Mood & Immune System Support, Easy-to-Use Dropper - Chicken Flavor, 2 fl oz

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Main Highlights

Premium Bioactive B12 + 5MTHF Combo Each 1mL serving delivers 500mcg of methylcobalamin plus 100mcg DFE of folate (L5MTHF) to support red blood cell formation, nerve health, and metabolic function.
Nervous System & Brain Health Support Our bioactive B12 with 5-MTHF helps maintain healthy nerve signaling, supports cognitive function, and aids in the metabolism of fats and carbohydrateskeeping your pet sharp and balanced at every stage of life.
Essential Nutrient Dogs Cant Make Themselves Vitamin B12 (cobalamin) isnt produced naturally in your pets body and must come from food or supplements. Our bioactive liquid formula provides a reliable source to help prevent deficiencies and keep dogs and cats thriving.
Boosts Energy, Mood & Active Lifestyle Encourages proper nutrient absorption to help dogs stay energized, uplifted, and ready for daily walks, playtime, and overall vitality.
Convenient Chicken-Flavored Liquid Drop directly into your dogs mouth or food. No chewing requiredideal for picky eaters or pets who resist tablets.

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9.2

iVitamins

Vitamin B for Dogs | Vitamin B Complex for Dogs | Vitamin B12 for Dogs | Dog Vitamins | B12 Vitamins for Dogs | Vitamin B Dog Supplements | B Complex for Dogs | B12 for Dogs | Do1 fl oz: Bacon Flavor

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Main Highlights

COMPREHENSIVE SUPPORT: We provide a high quality product that will help your pet to feel better with the power of nature and a balanced composition.
DELICIOUS FLAVOR: Your dog will love the delicious bacon flavor of our vitamin b tincture!
GENTLE CARE: Our dog vitamin b complexs powerful composition helps to provide one of the best puppy and dog supplements on the market. Our liquid drops provide gentle support for your dogs overall health.
FOR EVERY DOG, ALL BREEDS & SIZES: Our dog vitamin b was developed to ensure the digestibility for every pet - the liquid quickly enters the circulation and has a supportive effect.
USA MADE, SATISFACTION GUARANTEE: we are proud to provide the customer a premium product, with only the highest quality ingredients! If you are not completely satisfied with your order then please message us for a refund

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9.0

Nutrition Strength

Nutrition Strength Vitamin B for Dogs, Complete B Complex for Dogs, Promote Blood Cell & Nervous System Health, Help Sustain Cellular Energy Production & Maintain Brain Function, 120 Chewable Tablets

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Main Highlights

Highly rated supplement to support healthy brain function in dogs: 365 day guarantee; if you are not happy with our vitamin B for dogs tablets, simply contact us for a full refund; we want you to be completely satisfied with our premium supplement, which supplies the entire range of B vitamins, a group of micronutrients, which are vital for optimal physiological and neurological functioning; manufactured using the highest standards, our tablets can be taken with your dog's food or separately
Sustain cellular energy production in dogs: Nutrition Strength's premium B complex supplement for dogs ensures that your pet gets the nutrients, which take an essential part in every aspect of the absolutely vital catabolic process of producing energy within the cells; deficiency in any one of the B vitamins will have negative consequences for this process; particularly important for the generation of cellular energy are the active forms of thiamine, riboflavin, niacin and pantothenic acid
Help maintain cardiovascular and gluco regulatory function: studies have shown that several vitamins of the B complex can modulate peripheral cardiovascular and gluco regulatory function; supplemental administration of riboflavin, for instance, has been seen to lead to increases in the number of circulating red blood cells and the concentration of hemoglobin, while sufficient doses of biotin have been shown to improve glycemic control and insulin sensitivity in sufferers from diabetes
Support the nervous system in dogs of all ages, shapes and sizes: research has established that folates and vitamin B12 play fundamental parts in the function of the central nervous system at all ages and may play important roles in the prevention of disorders of CNS development; furthermore, researchers have found that thiamine deficiency can result in severe cellular deficit in nervous tissues, with potentially negative effects on the development of the central nervous system
Made in the USA: Nutrition Strength's vitamin B for dogs, complete B complex for dogs, promote blood cell and nervous system health, help sustain cellular energy production and maintain brain function is human grade; our premium vitamin B tablets for dogs 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

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8.8

Ka'Dee Simply Beyouful

Liquid Vitamin B-12 Complex Drops for Dogs and Cats - Nutritionally Balanced Vet Formulated - Energy, Appetite, Mood - Recovery - Helps Cognition and Brain, Joints, Skin, Digestion

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Main Highlights

Comprehensive Nutrition: This B-vitamin complex drop contains the right balance of antioxidants, vitamins, and minerals to promote overall pet health.
Convenient Liquid Form: Easy to administer liquid drops can be mixed with food or water for hassle-free supplementation.
Suitable for Cats and Dogs: Formulated for both feline and canine companions to support their unique nutritional needs.
Promotes Healthy Coat: Enriched with essential nutrients that contribute to a shiny, lustrous coat in pets.
Potent 2 fl oz Bottle: Long-lasting supply in a compact, easy-to-use dropper bottle for daily supplementation.

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8.6

ThorneVet

ThorneVET B ComplexVET – Vitamin B Complex Support for Dogs & Cats - 60 Soft Chews

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Main Highlights

ThorneVET B ComplexVET provides comprehensive Vitamin B Complex support for dogs & cats
Provides entire B vitamin complex that ensures absorbability & aids animals with digestive issues
Our proprietary formula contains Vitamins B1, B2, B3, B5, B6, B12, Folate, Biotin, & Choline
Comprehensive health support helps to reduce the negative effects of stress in companion animals
Enhances healthy cellular energy production, red blood cell formation & proper neurological function

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8.3

PETCLEAR

Vitamin B for Dogs, 200 Tablets, Vitamin B Complex Contains B12, B1, B2, B3, B5, B6, B7, B9 Supports Energy, Appetite, Digestive, Nervous System, Skin Health, Suitable for Cats and Dogs(1 Bottle)

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Main Highlights

Pet B-Complex Vitamins And Natural Substrates: Vitamin B for cats tablets are rich in vitamins B1, B2, B3, B5, B6, B7, B9, B12, covering the entire spectrum of nutrition. No need to purchase multiple bottles of single vitamin B, save money! With chicken powder as the base, together with apple powder, cherry powder, seabuckthorn fruit powder and natural fruit and vegetable ingredients, it has no artificial pigment, no artificial essence, no artificial food attractant, low sensitivity and mild, and can support the health of dogs and cats in all stages of life.
Guarding Pet Vitality Throughout The Day: Dogs vitamin B complex tablets contains vitamin B1,B2,B3,B5 core energy metabolism vitamins, promoting the conversion of staple food nutrition into daily vitality for pets, helping to improve fatigue, drowsiness and weakness, promoting energy metabolism, and maintaining the generation of energy in pet cells.
Supports Multiple Benefits: Vitamin B12 for dogs and vitamin B1, B6, B9 support neurological health and enhance pet vitality. Vitamins B1, B3, and B6 can improve loss of appetite and promote nutrient absorption. Vitamins B2, B5, and B7 help alleviate skin problems and dry hair in pets. Vitamins B3 and B6 support cardiovascular health in pets. Vitamin B9 and B12 provide important nutrients for pets in special life stages such as aging and pregnancy. Vitamins B1, B2, and B6 support the joint health of pets.
Good Palatability: Vitamin B complex for dogs is in line with the carnivorous nature of dogs and the picky eating habits of cats. The natural meat aroma blends with fresh fruit aroma, and the taste is similar to pet snacks, allowing dogs and cats to eat actively without the need for forced feeding. Adopting an easy to swallow tablet design, it can directly feed or crush mixed staple foods, catering to pets of different sizes such as small dogs and long haired cats, solving the problem of pet picky eating.
Scientific Ratio and Dosage: PETCLEAR has developed an organic vitamin B complex specifically for dogs and cats, strictly quantifying the eight major components of the B vitamins to ensure effectiveness, no excessive burden, or single overdose issues. It is suitable for the daily needs of pets of different sizes.
Large Capacity: 200 tablets of complete B complex for dogs with a large capacity design to meet long-term daily supplementation needs. At the same time, the sheet-like design makes storage easier and more convenient to carry
Usage: Feed according to the bottle's feeding instructions based on the weight of the dog and cat. 1-2 times a day. Only applicable to cats and dogs.

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8.1

Revival Animal Health

Breeder’s Edge B Strong Powder, B-Complex Vitamin Supplement for Dogs and Cats, Supports Reproductive Health, Promotes Normal Heat Cycles, and Helps Maintain Energy, 300g

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Main Highlights

COMPREHENSIVE B-complex vitamin, mineral, and amino acid supplement covering all essential nutritional needs
FOR HER Helps with heat cycles, conception rates, and embryo development for healthier pregnancies
FOR HIM Improves the quantity, quality, motility, and mobility of sperm, ensuring he has the drive and energy needed for breeding
FOR NEWBORNS Helps stimulate appetite and boost energy for a strong start in life
QUALITY ASSURED Made in the USA with globally sourced ingredients to ensure the highest standards

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8.1

Rx Vitamins

Rx Vitamins Amino B Plex Cat & Dog Supplement - Vitamin B Complex Liquid Plus Amino Acids for Dogs & Cats - Appetite Booster and Weight Gainer Cat & Dog Vitamins - 2 oz

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Main Highlights

Supports Overall Wellness & Vitality: Amino B Plex is formulated with spirulina, a blue-green algae that provides many nutrients, including vitamins, minerals, amino acids, antioxidants, B vitamins including vitamin B1, vitamin B2, vitamin B6, and iron. This versatile liquid supplement is ideal as an addition to your puppy essentials, senior dog supplements, or cat vitamins, as it supports pets at all life stages.
Highly Palatable & Appetite Stimulant for Dogs & Cats: Amino B Plex is a great dog weight gainer and appetite stimulant since it encourages consumption, making it beneficial for pets needing a boost in appetite and potential weight gain.
Fast Absorption: Amino B Plex ensures rapid absorption of essential nutrients, including B6 vitamin, which is crucial to support energy levels for senior and active outdoor pets. Ideal as dog vitamins and vitamins for cats, this liquid vitamin B complex delivers vital nutrients quickly, promoting overall health and vitality in pets.
Convenient Application: Offering essential vitamin B supplements, the highly palatable bacon-flavor liquid allows for easy mixing into pet food, ensuring hassle-free administration and optimal absorption of nutrients.
Quality Pet Vitamins & Supplements: Rx Vitamins' Amino B Plex prioritizes dog health and cat vitamin needs with its premium ingredients and formulation. Designed to support overall wellness in pets, it's a reliable choice for pet owners seeking high-quality supplementation for their beloved companions.

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Our Best Overall Choice

Best Choice

9.7

Dr. Mercola

Bark & Whiskers Organic Vitamin B Complex - B Vitamins for Energy & Nervous System Support - for Cats & Dogs - USDA Certified - 0.85 oz

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Daily Energy & Vitality Support: Bark & Whiskers Organic Vitamin B Complex delivers a balanced blend of B vitamins to help maintain energy and endurance in pets*
Complete B Complex Formula: Features the patented PANMOL vitamin B complex including biotin, thiamine, niacin, and riboflavin for broad nutritional support*
Enhanced Absorption with Quinoa: B vitamins are organically bound to organic quinoa seeds using a patented process to help improve bioavailability and benefits*
Ideal for Cats & Dogs: This versatile cat supplement and dog vitamin supports your pet's immune system, nervous system, and overall daily health*
About Bark & Whiskers: We support your pets everyday wellness with veterinarian-formulated products made from clean ingredients

Show Price

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