Formulation differences (different excipients, preservatives, pH) could potentially cause different injection site reactions in some patients
Wang H, Yoshizumi M, Lai KH, Tsai JC, Perrella MA, Haber E, and Lee ME (1997)
More serous B12 deficiencies have the potential to impair heart and neurological function, leading to a wide range of serous symptoms, including but not limited to tinnitus, severe joint pain, memory problems, depression, anxiety, poor muscle function, ataxia, and changes in reflexes
"Raising the profile of quality access to medications and disease states such as obesity and diabetes is a really good thing," Dr Deed said