Vitamin B12 (Generic) Injectable Solution

Prescription Item

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In stock
Strength: 1000-mcg
Size: 100-mL vial
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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.

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For use in Vitamin B-12 deficiency associated with inadequate Vitamin B-12 intake or intestinal malabsorption.

Possible Side Effects

No serious side effects have been reported.

Drug & Food Interactions

Unless indicated, a listed potential drug interaction does not imply that using the drugs together is contraindicated but does mean they should be used cautiously with enhanced awareness and monitoring.

Chloramphenicol: Concurrent use may result in decreased hematologic response.


No contraindications are documented for injectable use in domestic animals.

Disclaimer: This drug has not been found by FDA to be safe and effective, and this labeling has not been approved by FDA.

NOTE: For Generic Medications, picture displayed may not depict actual product. Generic medications may vary from one order to the next by size, color and shape depending on manufacturer. Please note product may arrive in a Chewy Pharmacy vial.

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  1. Prescribing Information

See all items by Vitamin B12

  • Item Number
  • Generic Name
  • Common Brand Name(s)
  • For Use With
    Dogs, Cats, Horses & Livestock
  • Administration Form
  • Product Form
  • Health Condition
    Vitamin Deficiency, Digestive Issues
  • Drug Type

Each mL contains: Cyanocobalamin (Vitamin B-12) 1000 mcg with sodium chloride 0.22% w/v (weight by volume), ammonium sulfate 0.1% w/v, citric acid 0.01% w/v, sodium citrate 0.008% w/v and benzyl alcohol 1.0% v/v (volume by volume) (preservative).

Recommended Dosage

Dogs/Cats - 0.25 to 0.5 mL. Horses, Cattle, Swine and Sheep - 1 to 2 mL.

Storage Instructions

Store at controlled room temperature between 59°F - 86°F. Avoid exposure to light.


How should I administer Vitamin B-12 (Cyanocobalamin)?

Inject subcutaneously or intramuscularly.

How often should I administer Vitamin B-12 (Cyanocobalamin)?

Suggested dosage may be repeated at 1 to 2 week intervals, as indicated by condition and response.

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