Vitamin B12 (Generic) Injectable Solution, 1000-mcg/mL, 100-mL vial

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$9.99 Chewy Price
($0.10 /mL)
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In Stock
FREE delivery on first-time orders over $35
Usually arrives in 3-5 days
Prescription approval made easy
We’ll reach out to your vet clinic.

No interest if paid in full in 6 months on PayPal purchases of $149+. .

Medications ship separately. Delivery times may vary.

About This Item

Details

Vitamin B12 (cyanocobalamin) is a supplement commonly used to treat vitamin B12 deficiencies in animals with gastrointestinal disease. Prescribed by a veterinarian, this injectable solution is used with dogs, cats and horses.We directly source prescription medications from manufacturers and wholesale distributors registered with the FDA and licensed by applicable state boards. Guaranteed genuine, and where applicable, backed by the manufacturer.

Ingredients

Instructions

FAQ

4.8
Rated 4.8 out of 5 stars
451 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

94% Positive

Effectiveness

93% Positive

Ingredients

92% Positive

Long-Term Benefits

91% Positive

154 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 1 out of 5 stars
By Brian on Dec 22, 2025

No syringe

You sent me the B12 with no syringe. How do you expect me to administer it with no syringe?

You sent me the B12 with no syringe. How do you expect me to administer it with no syringe?


Rated 5 out of 5 stars
By Denise on Sep 8, 2025

Efficient for Pets Recovery

The quality of this vitamin was, and is necessary for my cat's recovery. He had been abandoned as a kitten and was significantly malnourished with a throat wound

The quality of this vitamin was, and is necessary for my cat's recovery. He had been abandoned as a kitten and was significantly malnourished with a throat wound from a large bird. This vitamin needed to be injectable to help with his recovery based on his poor condition. He is doing a 100% better!!


Rated 5 out of 5 stars
By Jennifer on Dec 23, 2025

Timely and Useful

Chewy did a wonderful job coordinating with our vet The product came quickly

Chewy did a wonderful job coordinating with our vet The product came quickly


Rated 5 out of 5 stars
By Deborah on Jan 11, 2026

Ease of ordering

Just what the doctor requested. Fast delivery and priced well

Just what the doctor requested. Fast delivery and priced well


Rated 5 out of 5 stars
By Jennifer-Patrick on Sep 10, 2025

it’s wonderful get these things at chewy.

Once again it’s amazing that I could find the vitamin B12 she needed to treat her pica. It’s great that things like vitamins can be gotten for Dogs. What a wor

Once again it’s amazing that I could find the vitamin B12 she needed to treat her pica. It’s great that things like vitamins can be gotten for Dogs. What a world.!


Rated 5 out of 5 stars
By Colleen on Nov 1, 2025

Great price

Good quality and great price! You get a lot and would spend 3x’s more anywhere else.

Good quality and great price! You get a lot and would spend 3x’s more anywhere else.


Rated 5 out of 5 stars
By Suzanne on Dec 28, 2025

Vet recommended this for my old cat

Not sure how it works but labs did show he was low

Not sure how it works but labs did show he was low


Rated 5 out of 5 stars
By Sandra on Sep 5, 2025

Saving time, money, and most importantly, the stress on my cat.

This has saved me so much money by doing these injections at home, not to mention the stress it has saved my cat by having to go to the vet weekly.

This has saved me so much money by doing these injections at home, not to mention the stress it has saved my cat by having to go to the vet weekly.


Rated 5 out of 5 stars
By deb on Nov 13, 2025

Customer service in the chat with vet techs

The vet techs assisting me in customer service chat were fantastic !

The vet techs assisting me in customer service chat were fantastic !


Rated 5 out of 5 stars
By vicki on Aug 26, 2025

appreciation

I appreciate that Chewy reached out to the prescriber to get my order authorized. And I appreciate that the container was well wrapped for shipping

I appreciate that Chewy reached out to the prescriber to get my order authorized. And I appreciate that the container was well wrapped for shipping