After experiencing side effects in your cat, it is recommended to consult vet quickly to subside these effects
Curious about the science
NAC is generally well tolerated orally, with most people experiencing mild adverse effects like nausea and vomiting
NHS approach to B12 deficiency: NICE Clinical Knowledge Summaries recommend investigating B12 deficiency in patients presenting with macrocytic anaemia, unexplained neurological symptoms, or risk factors including pernicious anaemia, gastrectomy, malabsorption disorders, metformin use, proton pump inhibitors, or nitrous oxide exposure
Not for human consumption, medical, or diagnostic use.