There is no established optimal protocol
Individual variation Perhaps the most important lesson from real-world experiences is the extent of individual variation
More serious B12 deficiencies have the potential to impair heart and neurological function, leading to a wide range of serious symptoms, including but not limited to tinnitus, severe joint pain, memory problems, depression, anxiety, poor muscle function, ataxia and changes in reflexes
However, it has been shown to be helpful for the treatment of depression, panic disorder, polycystic ovarian syndrome, and fatty liver
Watch for worsening pain and spreading redness beyond the immediate area after 48 to 72 hours, fever, a hard warm lump, or systemic allergic symptoms such as hives, facial swelling, throat tightness, or breathing difficulty