b12 nasal spray vs injection How Naso Works Vitamin B12 Injections vs. Supplements:
Description
These can include minor discomfort, redness at the injection site, or mild digestive symptoms

They will advise you if any adjustments or monitoring are needed
Spectacular company and products

doi: 10.1210/jcem.87.5.8628

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