b12 nasal injection Naso Spray 2.3ml - Price, Uses, Side Effects Vitamin B12 Nasal Spray Manufacturer,
Description
When delivered as a B12 shot, mild side effects may include soreness at the injection site, itching, diarrhea, and swelling

Do not use if you have Lebers optic atrophy (may speed up vision loss)

While these side effects are rare, they can still occur in some instances

In that case, a doctor will likely recommend B12 shots to get their levels up to where they should be

C., & Koch, R

Each small bottle contains a shot of high-dose vitamin B12 (500g) which contributes to normal energy-yielding metabolism and zinc which contributes to normal cognitive function
