It is considered investigational, and human safety data is limited
Given 40-60% nasal bioavailability compared to 80-95% for injection, equivalent nasal doses would be approximately 400-1000mcg to achieve similar systemic levels
"Comparative Analysis of Advanced Chemical Intermediates in Pharmaceutical Manufacturing." Journal of Industrial Chemistry, Vol
Month 4 and beyond: finding your maintenance dose After month 4 and onwards, you will continue taking a maintenance dose, which may range between 1.0 mg and 2.4 mg weekly
Low B12 levels can lead to nerve damage, numbness, tingling, poor balance, and difficulty walking , making early diagnosis crucial
Store it in a dry place, away from excessive heat or cold