Dizziness or Lightheadedness: In rare cases, individuals may experience dizziness or lightheadedness after receiving a B12 injection
(Pheomelanin) 5-S-cyteinyldopa, 5-S-cysteinyldopa quinine Benzothaizine intermediates Red to Yellow pheomelanin UV UV Tyrosine 2 60-250 / UV 1
Glutathione: Systemic protectant against oxidative and free radical damage
Treatment of ethanol with rotenone (20 mM10 M) caused increase in lipid peroxidation, increase of lactate dehydrogenase and decrease in reduced glutathione content
Nutrient Deficiencies and Lab Results Low levels of B12, B6, or other B vitamins might warrant an initial round of weekly or biweekly injections until levels stabilize
Less frequently reported are water retention, numbness of the fingers / mild carpal discomfort, mild hunger, and transient changes in blood glucose