US$ 21.15
b12 nasal spray vs injection How Naso Works Mean Plasma Concentration time profile
Description
You wont absorb all of it, but such a high B12 injection dose ensures you have enough B12 circulating in your bloodstream at all times

But, on average, you may pay anything between $20 to $50 per injection

doi: 10.1038/s41573-020-0075-7
These signs are often blamed on stress or age, but low B-12 can be part of the story

Tracked next-day delivery anywhere in Thailand