is bac water and saline the same vs Sterile Water vs Saline: What to Use (2026) BAC Water vs Sterile Water

Air bubbles and how to handle them Small air bubbles in your syringe are not dangerous for subcutaneous injections

The bruising is also likely to be the reason why the are is sore

Mechanism And Absorption Injections (IM or subcutaneous) Usually given as cyanocobalamin or hydroxocobalamin Absorbed directly from muscle or subcutaneous tissue into circulation Typically administered in a clinic, or self-injected after training B12 nasal spray Absorbed through the nasal mucosa directly into the bloodstream Avoids needles, first-pass metabolism, and GI issues Can be administered at home in seconds A quick side-by-side view can help: Clinical work with prescription cyanocobalamin nasal spray (e.g., Nascobal) shows that nasal B12 reaches effective blood levels and maintains them over time when used on a consistent schedule, with research from the Comparison of the Efficacy demonstrating superior absorption through nasal delivery compared to oral administration

In the US, however, most physicians give vitamin B12 injections