does ingesting glutathione work system enhancement for cardiac protection: pharmacological options against oxidative stress and ferroptosis Glutathione: Benefits and Supplements

Summary An overdose of vitamin B12 is rare but can occur with excessive intake

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Some studies suggest that high concentrations of BCAAs selectively disrupt mitochondrial pyruvate utilization in a mouse model of ischemic heart injury (Li et al., 2017), while others showed that a BCAA-enriched mixture increased the average lifespan of mice, increased mitochondrial biogenesis and sirtuin one expression in primary cardiac and skeletal myocytes and in cardiac and skeletal muscle of middle-aged mice, and upregulated reactive oxygen species defense system genes (DAntona et al., 2010)

You are more likely to notice breakouts if you take high-dose supplements