does b12 injection cause diarrhea in cats Life Threatening Anemia treated with Food Therapy and a 17 year old Feline Vitamin B12 for Cats: Overview,

The drug is typically taken with a meal, unless your doctor instructs you otherwise

However, your vet will want to recheck your cat and perform further investigations if the diarrhea persists or your cat deteriorates (starts vomiting, becomes lethargic, the diarrhea worsens, etc.)

CPT 62324: Lumbar/sacral with indwelling catheter placement, continuous infusion or intermittent bolus

For example, if you develop a rash, hives, or wheezing (signs of an allergic reaction), or if you feel chest tightness or have difficulty swallowing, seek medical attention immediately

Cellular quality control by the ubiquitin-proteasome system and autophagy