oral b12 vs injection Should You Take Natural vs. Synthetic B12? Sublingual B12 vs. B12 Injections:
Description
The subcutaneous route is still used, and it has some practical advantages

For individuals following a vegetarian or vegan diet, fortified cereals, plant-based milks, and supplements are recommended

Systemic subcutaneous injection (abdomen, thigh) distributes the compound via circulation, potentially benefiting follicles across the entire scalp

I've never been a huge fan of wasting things unnecessarily, so if the latter was possible, that would always be great news
