Contact your GP if you experience: Unexpected symptoms after starting B12 supplementation, including persistent skin reactions, gastrointestinal disturbance, or mild allergic manifestations Neurological symptoms such as significant tingling, numbness, weakness, or balance problemsthese may indicate B12 deficiency paradoxically, or alternative neurological conditions requiring assessment Unexplained fatigue or malaise that develops or worsens despite supplementation Concerns about medication interactions , particularly if taking metformin, proton pump inhibitors, or other medications affecting B12 metabolism [2] [4] Seek emergency medical attention (call 999) if you develop signs of a severe allergic reaction following B12 injection, including facial swelling, difficulty breathing, or widespread urticaria
Key considerations include: Always check the strength on the product label
Post-Bariatric Surgery Dosing Requirements Those who have had bariatric surgery often need more B12 because their bodies dont absorb it well
If your symptoms worsen or do not improve, you must see a doctor in any case
To ensure that you actually have a deficiency, we recommend you have your levels checked by a physician
Rare Reactions: While uncommon, it is still a good idea to watch your pet for any unexpected reactions and contact a veterinarian if anything seems off