when do b12 injections work Benefits of for Optimal Health Sublingual B12 vs. B12 Injections:
Description
Our B12 injections replenish this key nutrient in your body

In combination with other vitamins, it helps in strengthening the immune system, improves the metabolism of the body, and is important for the nervous system

To address this, individuals can take a range of supplements such as oral B12 sprays

If you bought it from a UK supplier then it's much more likely that your they have had them stored at room temperature for days/weeks/months