Vitamin B12 is crucial for healthy nerve function and red blood cell production
[5] [13] As injectable products, they are classified as medicinal products requiring regulatory approval which most do not possess
You can get B vitamins from proteins such as fish, poultry, meat, eggs, and dairy products
PubMed Study: High-Protein vs High-Carb vs Fasting A foundational study by Finnigan, Hammersley, and Millar (1998) , published in the journal Appetite and indexed on PubMed as PMID 9920688, examined the moderating effects of meal composition on psychomotor performance impairment and blood alcohol levels in 51 male volunteers
Injection volumes stay small (0.05-0.1 mL), which community sources describe as more comfortable for subcutaneous delivery