For a subcutaneous B12 injection, a finer, shorter needle is used: around 25 to 27 gauge and half to five-eighths of an inch
A high-dose B12 shot, which is given intramuscularly as prescribed by a doctor, can quickly resolve a deficiency by raising the level of vitamin B12 in the blood
Harman SM, Metter EJ, Tobin JD, et al
The mechanism makes sense
(8) There are several neurotransmitters and functions considered by scientists to be important, such as dopamine, nitrous oxide, prostaglandin, and other neuron systems
There is no published, peer-reviewed, full-paper randomised human trial with accessible results showing that BPC-157 is effective or safe for any indication