Gastrointestinal Problems: Cyanocobalamin nasal spray is a useful substitute for vitamin B12 supplementation in situations when gastrointestinal problems, such as Crohn's disease, celiac disease, or atrophic gastritis, prevent vitamin B12 from food from being absorbed
We can't jump from personal experiences to assuming that some biological process is not working when we don't yet even have a good idea of how that process would work in a healthy person yet
Increased heart rate or palpitations , especially in sensitive individuals
If this isnt caught early enough, it can cause irreversible nerve damage
Request a lot-specific certificate of analysis from the supplier confirming benzyl alcohol concentration at 0.9%, pH within the 4.57.0 range, sterility testing results, and endotoxin levels
Folate supplementation must not be started before B12 deficiency is treated, as this can precipitate or worsen neurological complications