For example, in a 2007 study by Vinogradova et al, the peptide was found to significantly inhibit the development of tumors in female rats exposed to a standard amount of natural light [3, 4]
Blaese RM, Strober W, Levy AL, Waldmann TA
Effects on specific populations including the elderly, those with metabolic disease, and women have not been specifically investigated
During the initial treatment period with methylcobalamin, pulmonary edema and congestive heart failure have reportedly occurred early in treatment with parenteral methylcobalamin
No significant adverse effects were reported at doses up to 1mg per day over 24 weeks
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