doi: 10.1073/PNAS.1113651108 102 PeisleyAJoMHLinCWuBOrme-JohnsonMWalzTet al
Prolonged B12 deficiency can lead to severe neurological damage, including numbness, tingling, memory problems, and difficulty walking
How to Keep Your B12 Shots Cool When Traveling While most B12 injections do not require refrigeration, they must always be protected from heat and stored below 77F (25C)
Side effects happened more often when people went up in their dose or were at a higher dosebut even then, the impact tended to be in that mild to moderate range
It can be taken as an oral pill or injection, and its available from gray-market sellers online
The digestive system exists specifically to break down proteins into individual amino acids for absorption