5 Best Dog Supplements Reviewed for Health Now

Does your furry best friend sometimes seem a little… sluggish? Maybe their coat isn’t as shiny as it used to be, or perhaps their joints ache after a good romp in the park. We all want our dogs to live their happiest, healthiest lives for as long as possible.

That’s where dog supplements come in. But stepping into the supplement aisle can feel like entering a maze! Should you choose glucosamine, probiotics, or fish oil? The sheer number of bottles and confusing labels often leaves dedicated pet owners feeling overwhelmed and unsure if they are actually helping their dog or just wasting money.

This guide cuts through the confusion. We will break down the most important dog supplements, explaining exactly what they do and which ones truly matter for your dog’s age and lifestyle. By the end of this post, you will feel confident choosing the right additions to support your dog’s total well-being.

Top Dog Supplements Recommendations

Bestseller No. 1

Purina Pro Plan Veterinary Supplements FortiFlora Canine Probiotics for Dogs, Helps Digestive Gut Health and Diarrhea - 30 ct. Box

Number one probiotic supplement recommended by veterinarians (Kantar Veterinary Tracker, 2020)
Probiotic supplement for the dietary management of puppies and adult dogs with diarrhea
Contains a probiotic for dogs proven to promote intestinal health and balance
Promotes a strong immune system and contains antioxidants for dogs
Easy-to-feed dog supplement powder

Bestseller No. 2

Nutramax Cosequin for Dogs Joint Health Supplement, Contains Glucosamine for Dogs, Plus Chondroitin and MSM, Supports Healthy Joints, For All Breeds and Sizes, Chewable Tablets, 132 Count

Joint Health Supplement for Dogs - Cosequin is the #1 vet recommended retail joint health supplement brand▼, supporting joint health in dogs for over 25 years.
Contains Glucosamine for Dogs - Cosequin contains glucosamine hydrochloride (FCHG49) and sodium chondroitin sulfate (TRH122), plus methylsulfonylmethane (MSM). This unique combination of ingredients supports healthy joints.
For Any Breed or Size - Whether you have a young or senior dog, a small or large breed, Cosequin helps support their joint health.
Tasty Chews for Daily Use - Cosequin comes in a tasty chewable tablet, making daily administration easy and convenient.
Exceptional Quality - Cosequin is backed by science, undergoing thorough quality inspections to ensure your dog receives a safe, high-quality product. It is manufactured in the United States with globally sourced ingredients.

Bestseller No. 3

Zesty Paws Dog Multivitamin, Chewable Dog Vitamins and Supplements for Hip & Joints, Skin & Coat, Omega 3 Fish Oil for Dogs- Senior & Puppy Multivitamin- Chicken- 90ct

8-in-1 Formula - Zesty Paws Multifunctional Bites are functional supplement chews with premium ingredients that support physical performance, antioxidants, hip & joint, heart, immune, skin, liver, & gut health for dogs of all ages, breeds, and sizes.
Skin Health & Antioxidants – For animals with sensitive skin, this formula contains Cod Liver Fish Oil and Vitamin E to help maintain normal moisture and CoQ10 to help reduce oxidative stress.
Hip, Joint & Performance Support - Each dog chew features OptiMSM, a premium form of MSM for muscular support, which works synergistically with the Glucosamine HCl and Chondroitin Sulfate in these chews for hip and joint support plus Cod Liver Oil and B-Complex Vitamins support normal physical performance.
Gut Health & Probiotics - These chews also contain a six-strain Gut Health Blend (500 million cfu per chew) and a Digestive Health Blend to promote gut flora while supporting normal bowel function for dogs.
Heart, Liver & Immune Health - Multifunctional Bites feature powerful antioxidants, premium CoQ10, Cod Liver Oil and Vitamins A, C, & E to promote healthy cardiovascular function, support liver health and enhance immune response.

Bestseller No. 4

Zesty Paws Multivitamin Treats for Dogs, Glucosamine Chondroitin Joint Support + Digestive Enzymes & Probiotics, Grain Free Dog Vitamins and Supplements for Skin & Coat, Peanut Butter - 90ct

JOINT SUPPORT: This Zesty Paws multivitamin for dogs contains Glucosamine Chondroitin, with OptiMSM and Cod Liver Oil, offering enhanced joint and hip performance
IMMUNE ENHANCEMENT: Features Cod Liver Oil and Vitamins A, C, & E to bolster your dog's immune system. This multivitamin for dogs strengthens defense against health challenges
DIGESTIVE HEALTH: Includes a six-strain Gut Health Blend with 500 million CFU per chew. These Zesty Paws probiotics for dogs support healthy gut flora, normal bowel function, and overall digestive wellbeing
SKIN AND COAT MAINTENANCE: Formulated with Cod Liver Oil and Vitamin E, along with CoQ10, these dog vitamins for itchy skin maintain skin moisture and reduce oxidative stress
CARDIOVASCULAR AND LIVER SUPPORT: Enriched with CoQ10, Cod Liver Oil, and powerful antioxidants, these dog supplements & vitamins support heart and liver health, helping your dog stay active and healthy

Bestseller No. 5

Native Pet Dog Vitamins & Supplements - 11-in-1 Vitamin Powder for Dog Food Topper - Collagen, Glucosamine, Probiotics, Omega & More- Supports Healthy Gut, Mobility & Overall Health - 30 Scoops

11-IN-1 DOG SUPPLEMENT FOR FULL-BODY SUPPORT: Expertly formulated dog vitamins that promotes a balanced wellness, supporting mobility, digestion, skin and coat, heart, and cognitive health. Made to nourish every dog, from growing pups to aging companions.
HIGH POTENCY POWDER WITH 5X MORE ACTIVES: Unlike most pet vitamins and supplements, this powder delivers 2500mg+ of actives per scoop, 5x more than chews. More nutrients, better absorption. Vitamins for dogs that deliver real results.
FAST-ABSORBING NUTRIENTS FOR REAL RESULTS: A powder-based dog vitamin crafted for superior absorption and bioavailability. Smarter supplements for dogs that deliver more benefits with every scoop.
CLEAN LABEL WITH FULL TRANSPARENCY: This vitamins for dogs skips the junk. No artificial flavors, starches, or fillers. Every ingredient earns its place for real results. Puppy vitamins and supplements you can actually trust.
VET FORMULATED FOR DOGS OF ALL AGES & SIZES: Crafted by a board-certified veterinary nutritionist, this dog powder delivers expert-level care. One scoop a day supports long-term wellness for puppies, adults, and seniors. It’s smart dog supplements & vitamins, built for every stage of life.

Bestseller No. 6

24-in-1 Dog Vitamins and Supplements 200 Ct Dogs Multivitamin Chewable Contain Chondroitin Probiotics Omega-3 Glucosamine for Dogs Skin Coat Heart Joint Gut Liver Brain Eyes Immune Support - Chicken

Dog multivitamins chewable for skin & coat : Dog multivitamin is rich in Omega-3 fatty acids and vitamin E,which can relieve skin allergies,dryness,itching and other problems.Multivitamin for dogs nourishes skin follicles.Long-term consumption of dog vitamins multivitamin can make dog hair stronger and smoother,and reduce coat loss.The COQ10 in dog multivitamin chewable can resist oxidation and delay cell aging.Dogs with skin injuries can eat dog vitamins and supplements to promote wound healing
Dog multivitamin relieves joint inflammation: Dog vitamins for hip and joint can supplement high-quality MSM, glucosamine, and chondroitin sulfate to promote cartilage development and repair. Long-term consumption of dog multivitamins chewable can enhance the elasticity and toughness of joint cartilage, improve joint flexibility, and move more freely. Dog multivitamin chews can reduce joint friction and relieve joint pain. Dog vitamins and supplements can prevent and improve dog joint problems
Dog multivitamin chews are good for the gut: dog vitamins and supplements are made in the USA from natural ingredients. Dog vitamins multivitamin chewables contain a rich blend of probiotics to support intestinal and digestive health. Dog vitamins for small dogs can regulate the balance of intestinal flora, help calcium absorption, and promote bone development. Dog multivitamins chewables improve energy metabolism, converting food into energy, making dogs more energetic in their daily activities
Dog multivitamin chews protect overall health:Senior dog vitamins and supplements help improve blood circulation and prevent cardiovascular disease.Dog multivitamins chewable support normal liver function,promote liver detoxification,and improve negative mood.For dog with heart problems and older dog,taking dog vitamins and supplements in moderation is an auxiliary health care measure.Dog vitamins multivitamin helps enhance white blood cell activity,improve immunity,prevent infection and disease
Dog multivitamins chewable promote brain development: The DHA in krill oil in multivitamin for dogs is an important component of the brain and retina. Dog vitamins and supplements can improve dog cognitive ability. When training puppies to learn basic commands, puppies who are properly supplemented with dog vitamins multivitamin will behave more intelligently and improve memory.Dog supplements & vitamins can prevent and relieve eye problems such as dry eyes and tear stains, and keep eyes healthy

Bestseller No. 7

Dog Multivitamin Chewable with Glucosamine - 240 Treats - Dog Vitamins and Supplements - Senior & Puppy Multivitamin for Dogs - Hip & Joint Support - Immune Health, Skin, Heart, Digestion, Probiotics

23-in-1 Dog Multivitamin: Crafted to enhance your dog's overall health, our chews are packed with dog supplements & vitamins, including Glucosamine, Probiotics, and Omega Fatty Acids, ensuring top-to-tail well-being
Advanced Hip & Joint Care: Fortified with glucosamine, our dog vitamins provide critical hip and joint support to reduce inflammation and enhance flexibility for a happier, more active dog
Digestive Wellness with Probiotics: Packed with 6 vital probiotics, these multi vitamins for dogs aid in maintaining a healthy gut flora, supporting digestive health, and bolstering your dog’s immune system
Formulated for All Dogs: Created with every dog in mind, our puppy vitamins and supplements are perfect for all ages and sizes—from playful puppies to wise seniors—so your loyal companion gets the nutrients they need at any stage of life
Veterinarian Formulated & USA Made: Trust in the premium quality of our dog vitamins for small dogs, which are formulated by veterinarians and manufactured in the USA within an FDA-registered facility that adheres to the strictest quality standards

Bestseller No. 8

Salmon Oil for Dogs - Premium Fish Oil for Skin and Coat Health - Omega 3 Supplement - Supports Itchy Skin - 8 oz Liquid - Norwegian Dog Salmon Oil - Essential Dog Supplement

Chew + Heal's Norwegian salmon oil for dog food is packed with omega-3 fatty acids to promote healthy and happy fur for your dog.
Salmon oil is good for dogs with itchy skin as well as dry skin and coat. The omega-3 fatty acids help to aid overall skin and coat health for soft and luscious locks.
Vitamin E has a host of benefits such as heart, immune, cell, skin and coat health, and more. It is also an antioxidant making it a vital component to dog health.
This Heal's 8 oz. omega 3 Fish Oil for dogs comes in liquid form, making it easy to add to your dog's meals, enhancing it not only with a great taste but giving it a nutritional boost as well!
Our liquid fish oil for dogs is made in the USA and is good for breeds of all sizes.

The Ultimate Dog Supplement Buying Guide

Dog supplements can help keep your furry friend healthy and happy. But with so many options, choosing the right one can feel tricky. This guide helps you pick the best vitamins and additions for your dog.

Key Features to Look For

When you look at a supplement bottle, check these things first:

1. Purpose and Target Area

Joint Support: Look for glucosamine and chondroitin. These help older dogs move easier.
Skin and Coat: Omega-3 fatty acids (like fish oil) make fur shiny and reduce itchy skin.
Digestive Health: Probiotics and prebiotics keep your dog’s tummy happy.
Immune Boost: Vitamins like C and E offer extra protection.

2. Form Factor

Supplements come in different shapes. Pick what your dog likes best.

Chews: Most dogs love these because they taste like treats.
Soft Gels/Capsules: These are easy to hide in a spoonful of peanut butter.
Powders: You mix these directly into your dog’s regular food.

Important Ingredients and Materials

The ingredients list tells the real story. Good ingredients mean a good supplement.

Quality Sources Matter

Natural Ingredients: Seek out supplements made with real food sources rather than artificial fillers.
Third-Party Testing: The best companies pay outside labs to check their products. This ensures purity and accuracy. Look for seals or statements about this testing.
Avoid Unnecessary Additives: Skip products packed with artificial colors, flavors, or too much sugar.

Factors That Improve or Reduce Quality

Not all supplements are created equal. Quality is very important.

What Makes a Supplement Better?

Bioavailability: This means how easily your dog’s body can absorb the ingredient. Some forms of vitamins are absorbed better than others.
Proper Dosing: The label must clearly state how much of the active ingredient is in each dose. Too little won’t work; too much can be harmful.

What Reduces Quality?

Fillers: Ingredients like corn, wheat, or soy often take up space where good ingredients should be.
Poor Storage: If the product packaging is weak, sunlight or air can break down important vitamins, making them useless.

User Experience and Use Cases

Think about your dog’s daily life when you buy.

When Should You Use Supplements?

For Puppies: They might need specific vitamins for fast growth.
For Senior Dogs: Joint support becomes a top priority for aging pets.
For Active Dogs: Dogs that run or work hard might need extra support for muscles and joints.
Diet Gaps: If your dog eats a limited or homemade diet, supplements fill nutritional holes.

The best user experience involves easy feeding and visible results. If your dog refuses the supplement, it is a waste of money. If your dog’s coat looks dull or they seem stiff, you need to adjust the supplement choice.

Dog Supplements: 10 Frequently Asked Questions (FAQ)

Q: Do all dogs need supplements?

A: No. Most healthy dogs eating a high-quality, complete commercial dog food do not need extra supplements. Supplements are best for dogs with specific needs or health concerns.

Q: When should I start giving my dog supplements?

A: Talk to your veterinarian first. They can recommend supplements based on your dog’s age, breed, and existing health status.

Q: Are dog supplements the same as human vitamins?

A: Absolutely not. Dogs need different amounts and types of vitamins than humans. Human vitamins can sometimes be dangerous for dogs.

Q: How long does it take to see results?

A: This varies. For digestive aids, you might see changes in a week. For joint supplements, it often takes 4 to 8 weeks to notice real improvement.

Q: What is the difference between a probiotic and a prebiotic?

A: Probiotics are the good bacteria themselves. Prebiotics are the food that helps those good bacteria grow strong in the gut.

Q: Can I overdose my dog on supplements?

A: Yes, you can. Too much of certain vitamins, like fat-soluble ones (A, D, E, K), can build up and cause harm. Always follow the dosage instructions.

Q: Should I switch brands if one is not working?

A: If you have given a supplement the recommended time (e.g., 6 weeks) and see no benefit, it is smart to switch to a different brand or a different type of ingredient.

Q: Are grain-free supplements better?

A: Not necessarily. Whether a supplement is grain-free depends on your dog’s specific allergies. Focus more on the active ingredients than the presence or absence of grains.

Q: How should I store my dog’s supplements?

A: Keep them in a cool, dry place away from direct sunlight. Some liquid oils need refrigeration after opening.

Q: Is it okay to mix different types of supplements?

A: You should only mix supplements after consulting your vet. Combining supplements that both contain high levels of the same vitamin can lead to accidental overdose.