Check the label of your chosen supplement for the recommended serving size, as concentrations vary between tablets, capsules, and liquid forms
Leon J., Sakumi K., Castillo E., Sheng Z., Oka S., and Nakabeppu Y., 8Oxoguanine Accumulation in Mitochondrial DNA Causes Mitochondrial Dysfunction and Impairs Neuritogenesis in Cultured Adult Mouse Cortical Neurons Under Oxidative Conditions, Scientific Reports 6 (2016): 22086, 10.1038/srep22086
In general, excessive levels of vitamins and minerals can be hard on the organs and should be avoided
Any claims about synergistic effects from combining these agents are entirely unsupported by clinical evidence
In most cases, this settles as the body adapts
You inject it, you get red, you can you might have a slight bit of nausea