b12 injection for diabetes Compounded Methylcobalamin (Vitamin B12) Injection, 5mg/mL B12 Injection for Peripheral Neuropathy

All four required hospitalization, and all experienced prolonged weakness and breathing difficulties

Improving mood and memory: Studies suggest B12 may play a role in mood regulation and cognitive function

[1] [3] It occurs in only about 2-3% of the population over the age of 65

While no mechanism suggests delayed toxicity, this cannot be completely ruled out without long-term controlled studies

Last reviewed: June 9, 2026 Last updated: June 9, 2026 Written by: Jay Hastings, CEO of PlexusDx Jay Hastings is the CEO of PlexusDx, a precision health company focused on genetic testing, blood biomarker insights, and personalized wellness recommendations

In some cases, additional tests such as blood tests or biopsies may be required to rule out other conditions