Diabetes Care 34 , 21522157 (2011)
Depending on the severity of the symptoms, a hangover can be mild (with a slight headache and fatigue or just general discomfort), moderate (moderate-to-severe headache, nausea, vomiting, irritability, fatigue, and dehydration),or severe (intense and severe headache, mood swings, anxiety, dizziness, severe nausea and vomiting, impaired concentration, muscle pain, extreme weakness, and fatigue)
This phenomenon explained how B12-deficient patients reported feeling magically rejuvenated within a day or two of their first B12 injection
The only way to address high B12 is to identify and treat the underlying cause or to stop the exogenous source
It is an antioxidant and is fundamental to the production of glutathione, which is another powerful anti-oxidant