Safety Toxicity No toxic or adverse effects have been associated with large intakes of vitamin B 12 from food or supplements in healthy people
Nerve damage and neuropathy
Depression research and DSIP peptide
In addition, included were, i.e., 4-week intravenous toxicity in rats followed by 4 weeks of recovery, 4-week intravenous toxicity in dogs, sub-acute (14 days) intracolonic toxicity study in rats and Beagle dogs, a repeated dose (28 days) dermal toxicity study in Wistar rats, chromosome aberrations in human lymphocytes cultured in vitro, an Ames test, a micronucleus test, female fertility and early embryonal development after intravenous administration to rats, embryofetal development after intravenous administration to rats (including toxicokinetics in pregnant animals and placental transfer), embryofetal development after intravenous administration in New Zealand White rabbits, cardiovascular and respiratory systems in anesthetized dog, a sensitization study in guinea pigs (Maximization test), and an acute eye irritation/corrosion study in albino rabbits
In these types of anemias, the red blood cells dont develop like healthy red blood cells