taste in mouth after b12 injection funny Vitamin B12 is essential for good health, but some funny taste in mouth after

More serious side effects are rare but can occur

From the side of the organs of vision: diplopia, "flies" before the eyes, conjunctivitis, photophobia, nystagmus

Your provider should discuss warning signs and establish clear contact protocols for adverse events

Anagnostis P, Gkekas NK, Achilla C, et al

In some cases, untreated vitamin B12 deficiency can lead to behavioral and health issues such as decreased brain function, depression, osteoporosis, and macular degeneration

Even though vitamin supplements are sold over the counter, any vitamin supplementation should always be discussed with a physician, says Gary Soffer, MD, a Yale Medicine allergist and immunologist who offers guidance on the safe use of dietary supplements, among other things, within the Integrative Medicine Program at Smilow Cancer Hospital