Abstract Cancer, uncontrolled cell growth due to the loss of cell cycle regulation, is often found to be associated with viral infections and, as recent studies show, with bacterial infections as well
These small studies also do not produce the same kind of safety data seen with larger, more rigorous studies
67 RaiA.TripathiP.DwivediS.DubeyS.ShriM.KumarS.et al (2011)
Side effects may include local injection site reactions, gastrointestinal disturbances, hypersensitivity reactions, hemolytic anemia in G6PD-deficient patients, and kidney stone formation in susceptible individuals
A separate study conducted in 2017 called Vitamin B12 and Semen Quality also found that increased B12 intake in men resulted in improved semen quality