Keeping felines happy and health is one of the top priorities for any concerned pet owner. To achieve this objective, cats require a healthy diet, lots of physical exercises, and plenty of mental stimulation. The former case is arguably the most fundamental, but it is unfortunate that it is the most confusing area. The right, healthy diet that helps ward off infections requires regular consumption of the best vitamins for cats.

Often available as vitamin supplements, these foods ensures felines get all the essential nutrients needed to fill the gap left by the normal diet. Using these supplements, your cat’s health and happiness are boosted significantly. Nonetheless, with tens of hundreds of different brands and models out there in the market, it is quite a challenge getting the best vitamin for cats.

Fortunately, we are here to help you out as we recommended some of the best products to consider in 2021. We have arrived at this list based on extensive research and hands-on testing so that any item you choose is guaranteed to deliver outstanding results. Take a look!

List of 10 Best Vitamins For Cats Reviews:

10. Grizzly Omega Health for Cats

Do you want to impress your lovely feline with the most nutritious vitamin supplement? If so, then the Grizzly Omega Health for Cats is a perfect choice. As its name suggests, this product comprises of Omega -3, which is extracted from wild, Alaskan salmon.

While this salmon type has fewer calories, it is extremely rich in Omega-3 –a vital source of essential fatty acid and arachidonic acid. It is important for a good immune system, a healthy coat, and improved heart health. The Grizzly Omega Health also contains high levels of EPA and DHA to support nerve-based functions including vision & cognition and fertility.


  • Ingredients –salmon oil, tocopherols, and Pollock oil
  • Size -32 ounces
  • Certification –NASC, and FDA certified

9. Grizzly Omega-3 Supplement for Dogs & Cats

The Grizzly Omega-3 Supplement for Dogs & Cats is one of the best vitamin supplements offering all the essential nutrients needed by your feline. The source of its Omega-3 is from a wild, Alaskan salmon known to be incredibly rich in Omega 3 with fewer calories.

This product contains high levels of EPA as well as DHA to support coat & skin health. It is also formulated to boost the cat’s immune system, heart health, fight free radicals, anti-inflammatory, hip & joint health, fertility, and connective tissue health.


  • Size -64 ounces
  • Ingredients –tocopherols, Pollock oil, and salmon oil
  • Product dimensions -5 by 3.6 by 9.7 inches
  • Certification –NASC, and FDA certified

8. Fortiflora Purina Pro Plan Veterinary Diets

The Fortiflora Purina Pro Plan Veterinary Diets is one of the best probiotic supplements loved by cats and highly recommended by many veterinarians. Unlike other cat vitamins of the class, this one has high levels of antioxidants, which is effective and safe in promoting a healthy immune system and restoring normalcy in intestinal health.

Best suited for both healthy and sick cats, this product is particularly popular among felines with digestive issues, acute enteritis, and diarrhea. It is blended with additive natural flavor, giving this vitamin supplement the potent palatability of crushed temptations, thus becoming the most sought after probiotic supplement for the dietary management of kittens and cats.


  • Item weight -2.1 ounces
  • Ingredients –probiotics

7. Pet Ultimates Probiotics for Cats

If you do not want to see your cat suffering from any form of illness, then you had better serve them with the Pet Ultimates Probiotics. Each tasty scoop of this product contains up to five billion bacteria to boost regular digestion, provides renewed vitality, and improves healthy skin.

The plenty of microorganisms in this supplement guards the cat’s colon against infections and inflammation by toxic bacteria, yeast, and a host of other opportunistic microorganisms. This product is formulated in a GMP-certified facility, hence the reason why you can easily trust it for feline’s digestion solutions. The Pet Ultimates Probiotics is easy to administer as all you need to sprinkle the recommended dose on the cat’s food each day.


  • Item weight -0.16 ounces
  • Product dimension -3 by 2.5 by 3 inches
  • Certification –GMP, and FDA certified

6. Vetoquinol Viralys L-Lysine Supplement for Cats

Are you looking for a highly palatable vitamin supplement formulated to support a healthy immune system in kittens and cats? If the answer is YES, then the Vetoquinol Viralys L-Lysine Supplement for Cats is arguably the right choice. It is recommended for health conditions responsive to Lysine as it maintains normal eye function and supports the respiratory system.

Other ailments that this compound will help manage, includes but not limited to sneezing, squinting, watery eyes, runny nose, inflamed eyes, sinus congestion, and conjunctivitis. It features poultry and fish flavor, making it irresistible to felines and easy to ingest.

For best results, add to food 500 mg twice a day for felines six months of age and older and 250 mg for kittens under 6 months.


  • Size -3.5 ounces/100 grams
  • Available form –powder
  • Active ingredients –L-lysine hydrochloride
  • Inactive ingredients –brewer’s dried yeast, hydrolyzed fish, sodium sulfate, sodium acid pyrophosphate, tocopherols

5. Premium Grade Hemp Oil for Cats

The Premium Grade Hemp Oil for Cats is a great formula that is best suited for anxious and nervous cats. This separation-anxiety relief supplement serves other roles, which include relieving muscle pain, joint pain, depression, and improves sleep as well as managing mood and reducing spasms & seizures. It features high contents of Omegas for heart, skin, hormones, and skin health.

This herbal supplement, with no herbicides, pesticides, or GMO is made from organically grown and certified Colorado hemp extract so you rest assured that you are giving your lovely cat the best hemp oil available in the market.


  • Ingredients -100 percent organic, Hemp oil
  • Item weight -3.2 ounces
  • Certification –FDA approved

4. VetriScience Laboratories -Vetri Lysine Plus

Do you want to help your four-legged friend feel and look her best every day? If so, then supply your cat a daily dose of VetriScience Laboratories -Vetri Lysine Plus.

This product is formulated to support collagen formation, immune system function, antioxidant activity, tissue repair, hormone & enzyme production, and antibody & lymphocyte production. It has been clinically proven that this supplement help prevents the replication of the VFR virus and its associated symptoms. Each bag of this diet product has a satisfying yummy flavor and shape so that even the fussiest cat will love to have a bite of it.


  • Active ingredients –L-Lysine, Dimethylglycine (DMG)
  • Inactive ingredients –Arabic gum, vegetable oil, rye flour, sodium alginate, brewers
  • yeast, canola oil, citrus pectin, oat flour, glycerin, and silicon dioxide among others
  • Item weight -4.8 ounces
  • Product dimensions -11.5 by 5.2 by 8.6 inches

3. Zesty Paws Pure Wild Alaskan Salmon Oil for Cats

The Zesty Paws Pure Wild Alaskan Salmon Oil gives your cats a mouthwatering reason to for their food bowl. With rich Omega-3 fatty acids containing high traces of DHA and EPA, this supplement promotes supple, soft, and healthy-looking skin for cats. The salmon oil, one of its ingredients, make dull and brittle coats appear shinier and sleeker.

This product is also formulated to promote healthy cardiovascular function besides supporting a healthy immune system and mobility support. With best-tasting flavors around, this mess-free treat for cats is the best alternative to soft or capsule chews –a few quick pumps of this product mixed nicely with your cat food for effortless ingestion.


  • Size -8 ounces
  • Certification –FDA registered and NSF/GMP certified
  • Main ingredient –Wild Alaskan salmon oil, natural flavors

2. Billion Pets –Pure Hemp Oil For Cats

Are you looking for a vitamin supplement that will enhance your cat’s overall health by rejuvenating her livelihood? If so, then look no further than the Billion Pets –Pure Hemp Oil.

This is a highly potent supplement with high concentrations of pure hemp oil and vital flavonoids formulated to help ease anxiety, seizures, stress, nausea, chronic pain, and inflammation in cats. It is also useful in managing gastrointestinal issues and skin disorders like rashes, dry nose, shedding, acne, and eczema. Its 100 percent natural ingredients contain no traces of GMO, additives, harmful chemicals, and preservatives.


  • Certification –FDA and GMP certified
  • Main ingredients –Hemp oil extract, natural flavonoids, Omega 3 &6 fatty acids,
  • vitamins (A, D, and E), phytochemicals, and trace minerals
  • Shipping weight -3 ounces

1. Purina Pro Plan FortiFlora Veterinary Cat Diets

The Purina Pro Plan FortiFlora Veterinary Cat Diets is a true probiotic supplement for the dietary management for adult cats and kittens with diarrhea.

This product contains an effective and safe strain of beneficial bacteria that promotes normal intestinal microflora, a healthy immune system, and stability/balance.

This number-one probiotic brand as recommended by veterinarians across the globe has been blended with some of the mouthwatering natural flavors so it becomes every cat’s favorite.


  • Size -1 pack
  • Ingredients –animal digest, vitamin E supplement, brewers dried yeast, zinc proteinate,
  • salt, copper proteinate, sodium selenite, calcium iodate, and taurine among others
  • Product dimensions -4 by 3 by 5 inches
  • Shipping weight -1.6 ounces

Buying guide for the Best Vitamins For Cat:

We all agree that getting your lovely cat the best vitamins goes a long way in ensuring that have had good health. Of course, you will need to consult your Vet to recommend you on the best product to buy.

What happens if you cannot access an expert to get the said advice? Well, it happens most of the time, and it becomes even more challenging if it is your first time buying these products. However, it is more likely that you will choose the best products if you keep the following points in mind.

Factors to consider when choosing the Best Vitamins For Cats

Go natural
The very first thing you need to know when choosing the finest vitamin supplement for your cats is that natural diets are a much better choice than any other type you will find in the market. This is because; all-natural ingredient vitamin diet is more effective, safer, and affordable.

Ingredient sourcing
Where and how the ingredients are sources is another important factor to consider when choosing the best vitamin supplement for cats. The health of your feline is of utmost importance, and so the ingredients used must be safe.

For instance, if you are concerned about a product with Omega -3 fatty acids, then consider supplements with wild Alaskan salmon. Similarly, for supplements to relieve anxiety and nervousness, consider those products containing pure hemp oil extract, and so on.

Quality assurance
It is the obligation of the pet owner to ensure that the vitamin supplement you choose for your cat is approved and certified by the relevant bodies like DSHEA and FDA. It is obvious that before any product is certified, it must meet the set standards. Besides that, ensure it is manufactured pharmaceutically graded and GMP compliant facility.

Easiness to administer
At the very least, consider those supplements that are easier to administer. These could be those available in liquid or capsule form as they can be easily mixed with food or water for effortless administration. More importantly, consider products that feature natural flavor and do not have a strong or repugnant odor. The latter category enables felines to ingest all the contents without any hassle.

It is our sincere hope that our review and guide took the guesswork out of choosing the best and healthy vitamins for your cats. All the products making to our list have in one way or another meet all the above factors. More importantly, these vitamin supplements are well respected with a stunning reputation of effectiveness. The beauty of these products is that they do not have artificial ingredients; hence, they cannot stress the cat’s body systems. Adding any of them to your cat’s daily food is the right way towards ensuring that your feline lives a healthy life.