Common signs include persistent fatigue (even after a full nights sleep), brain fog, mood swings or irritability, numbness or tingling in the hands or feet, and a weakened immune system
Always document the drug name (including NDC number where required), the dose administered, and whether the route was subcutaneous, intramuscular, or intra-arterial
Similarly, caffeine can interact with the absorption of B12, as it influences the digestive system and might exacerbate feelings of discomfort post-injection
After experiencing side effects in your cat, it is recommended to consult vet quickly to subside these effects
The effects of a vitamin B12 shot can last anywhere from a few days to a few weeks , depending on your bodys needs and current B12 levels