Let’s get real: B12 injections are generally safe, but they’re not risk-free. Some people get pain at the injection site, mild diarrhea, or a weird metallic taste in their mouth.
Rare but serious side effects include allergic reactions—especially if you’re sensitive to cobalt (a component of B12). Yes, that stuff in blue paint. Also, if you have certain conditions like Leber’s disease (a rare eye disorder), injections can actually worsen damage.
Plus, they can be pricey. A single shot might cost $20 to $70, and insurers often don’t cover them without a diagnosed deficiency. Your wallet might feel the pinch before your energy spikes.
