B12 for Cats

(19 customer reviews)


B12 for Cats is a natural, bioavailable, non-synthetic vitamin B12 in liquid form. Vitamin B12 is crucial to the health of your cat’s immune system, nervous system, digestive system & cognitive function. Vitamin B12 is an effective way to help cats feel more lively and stimulate appetite levels. This B12 supplement is superbly more effective in cats than it’s synthetic counterpart, cyanocobalamin, because it is absorbed more readily by the body.  Get your kitty on the road to excellent health by adding B12 for Cats into their daily diet!


Purrfect for:

  • Immunity Health
  • Kidney Health
  • Nervous System Health
  • Pancreas Health
  • Gastrointestinal Health
  • Cognitive Health
  • Appetite Health
  • And much more!

In stock (can be backordered)

SKU: B12 Category: Tag:


B12 for Cats (Methylcobalamin) is the neurologically active form of vitamin B12. Vitamin B12 is important for nerve cells, energy production and red blood cell production. A lack of vitamin B12 can contribute to a variety of problems, including cognitive dysfunction. Vitamin B12 is essential for red blood cell production, so too low a level of vitamin B12 in your cat’s body may cause or contribute to anemia, therefore vitamin B12 supplements may help treat anemia.

Cats with IBD, pancreatitis and intestinal lymphoma have low levels of vitamin B12. Kitties with CKD benefit greatly from B12 supplementation in it’s natural form (Methylcobalamin) as it reduces inflammation.

Methylcobalamin is more bioavailable than its synthetic counterpart, cyanocobalamin, and therefore more effective because it is absorbed more readily by the body.

B12 for Cats is a water-soluble vitamin so clinical issues from overuse have not been recorded.

Active ingredient: 250 mcg methylcobalamin | serving size .5 ml | servings per container 60

Other ingredients: vegetable glycerin, purified water, citric acid


1/2 ml dose (250mcg) for adult cats once per day

1/4 ml dose (125 mcg) for kittens once per day

Safely double the dose (twice per day, morning and evening) with confirmed B12 deficiency, malabsorptive GI tract problems (IBD), chronic kidney disease, pancreatitis and megaloblastic anemia.

B12 can be administered in food or water, though it’s recommended in food to get the full dosage, and is safe to use in conjunction with other holistic solutions.

Side Effects: Improved appetite, increase in energy and vitality, improvement in cognitive and neurologic systems, weight gain in malnourished cats. Response times may vary.

Made in the USA

Safe for dogs too!

Keep refrigerated

Do not cook or heat product

Keep out of reach of children

Do not use in conjunction with other medications without consulting your veterinarian.

Do not use in cats with previous allergic reactions or hypersensitivity to B12

Discontinue if negative side effects occur



Additional information

Weight 1.8 oz
Dimensions 2 × 2 × 4 in

19 reviews for B12 for Cats

  1. Michelle (verified owner)

    Amazing product, amazing company. I cannot say enough about both. Who knew that animals could have a B12 deficiency. When told by my vet B12 might help my aging kitties instead of getting the synthetic form I looked for a more natural B12 and found it in this wonderful product and was able to purchase it from a company who cares about their clients and goes above and beyond to get their products shipped out in a timely manner . My two kitties just turned 18 and this product has made an amazing difference in the way that they look ,the way that they act and if it gives me just one extra day with them it is so worth it.
    Thank you so much 2 crazy cat ladies! I appreciate it 😎and Lilly and Carson appreciate it 😺😺

  2. Kristen Frewing (verified owner)

    This product was amazing it helped to get my cats to eat again after the had a upset stomach

  3. Gail (verified owner)

    Great product! Has amazing results on the coats and energy of my cats. I have gifted two friends the B12 and also give it to a 17 year old cat who loves to stay on my porch(with owners permission). The B12 was used on a neighbors chicken who also did well on it! Thank you for incredibly healthy, life enhancing products! You have the best!

  4. Linda (verified owner)

    Well took cat to vet and 650.00 later found out low on B12 so ordered it and he is tarting to gain his weight back and acting like his ole self again .

  5. Anonymous

    I am SO happy that I found Two Crazy Cat Ladies and B12 for cats. I have a 15 year old feral cat (quite docile) who has been suffering with chronic diarrhea (which translates to dehydration) for close to a year. I have spent hundreds of dollars at the vet – changed food too many times to count – added supplements and probiotics to his diet without noticing any significant results until now and B12. This vitamin supplement has proved to be effective in my cats overall health, especially weight gain. “Herkie” (short for Hercules) appears to feel better and of course, so do I. Thank you so much CCL for your professional help and for offering such an amazing, affordable product!

  6. Deanna Schefter (verified owner)

    Excellent product! Thank you so much for sharing this B12 I have 2 kitties and the one suffered a diabetic episode in December with neuropathy in his legs and could barely walk, this was the first sign I noticed it came on fast! the vet required me to inject insulin and change food and month later he went into remission, she did not think he would walk normal again. here we are 7 months later and 4 bottles of b12 and he is walking normal/jumping on everything fighting/playing with his brother which was non-existent for months. his weight is lighter and coat is so shiny and healthy! he is 11 yrs old and has come back to us! His brother is also taking it and hasn’t had any health concerns and hope not to have with this amazing product! Thanks again from me and my boys Spud & Murphy .

  7. Shar (verified owner)

    It is wonderful and has made my fur babies feel younger and happier. They play more . I feel it is a very good product

  8. Barbara Stewart (verified owner)

    An amazingly effective product! I recently added B12 for Cats to my kitty’s supplement regimen. Thom is an 8 year-old, FIV+ kitty whom I adopted 3 years ago. Although he no longer has any viral symptoms or health issues (due in large part to the fabulous Feline Essentials products and Pam Roussell), I want to provide him every advantage in preserving his health. Natural vitamin B12 is a remarkable nutrient that provides many health benefits. He didn’t need more energy or a better appetite, LOL, and the full dose made him act like the Energizer Bunny and Mikey! After experimenting with the dosage, I found that .25 mg is the sweet spot for Thom. His eyes are brighter and his fur is shinier; both of which are characteristics of improved health. I’m grateful to have another natural, do-no-harm tool to help keep him healthy and happy!

  9. Barbara (verified owner)

    I would recommend this B12. My boy Symba doesn’t mind taking it and I feel it is making him move active.. He is 17 years old..

  10. Roberta Mau (verified owner)

    My kitties have no problem taking B-12 in their food and they are thriving on Feline Essential products. I only wish B-12 came in a larger size. It’s a great product and keeps my furboys healthy, especially my FIV+ kitty. Thank you so much Adrienne and Jae for all that you do for our kitties.

  11. Daniel Roodzant (verified owner)

    Great product and the only methyl version I’ve been able to find as a liquid. This product has helped with my girls appetite and anemia!

  12. Brijane Hills (verified owner)

    Learned about from the CAT DADDY!! Awesome results in my 18 year old BFF! Out of stock @ JG. Found the wonderful Crazy Cat Ladies❤shipped quickly!👏👍✌❤

  13. Andrew Hunter (verified owner)

    it is to my understanding that Cats don’t absorb b12 like humans and that is why shots are necessary. I know when any internal issues come, like up like pancreatitis, B12 is always recommended in 10 unit shots of 3000mcd every week. so is it possible that this helps cats,, Yes,, but is it enough to make a difference,, That I do not know…

  14. Yelena (verified owner)

    Hello! I have 2 seniors cat , one with Diabities and pancreatic and other with stomach slow cancer
    With this product I see a lot of improvements in their health, appetite and play.
    Highly recommended !
    Was very happy to find this vitamin !
    Thank you !

  15. Cheryl Sanders (verified owner)

    My 14 yr old cat Tiger recently diagnosed with pancreatitis. He easily takes the liquid B12 in treats and after a few weeks he is a lot more active and playful again. His eyes are brighter and he is more like a kitten than 14 ! I’m so happy knowing he’s doing so much better! Thank you Two Crazy Cat Ladies for what you do. I am now giving it to my 8 year old Calli girl and she’s perked up more too!

  16. Clif Ashcraft (verified owner)

    The B12 has made a big difference in the life of our elderly cat, Paris. She must have been deficient in B12. Acts like a kitten again.

  17. Gabriela Vargas (verified owner)

    I recently added this gem to my collection of the crazy cat ladies supplements and I love it! & so does my baby Chuckles. It 100% gives him more energy and increases his appetite I like to give it to him in the morning otherwise my baby will want to play all night. He will literally wake me up if I give this to him to late in the day! I definitely recommend this one!

  18. dmwalker214 (verified owner)

    I have been giving this to my guy for a couple of months, along with Oxy-Cat and Vita-Cat. I am not sure if these products are beneficial from a metabolic standpoint. I can verify, however, that his coat is thicker and more luxurious.
    I had asked if there were research studies done for the various products in terms of efficacy and was told there were none. So pretty much going on anecdotal comments, reviews, and good faith.
    That said, I think 2 Crazy Cat Ladies ROCKS! Thank you Jae and Adrienne!!

  19. Lea Lockheart

    These knowledgeable, caring ladies and the vital products that they represent effectively handled the crisis my senior cat was having. My 17 year old cat was displaying signs of obvious joint pain & distress. He was lethargic and could hardly walk, had very little appetite, and didn’t want to be touched. I followed the ladies product and dosage recommendations for B12 for Cats and Catalyst ‘Antioxidant Enzyme formula. Within two days I was delighted to behold signs that my baby had made a remarkable recovery. In the days since he’s received the ladies products, this senior cat was playing/running from one end of the top floor of my two story home all the way down stairs to the main floor. He also tolerated food much better, and is more cognitively alert. Thank you so much ladies for your expertise and representation of products that do what they say they will do.😁

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