A recent systematic review and meta-analysis of 21 randomized, placebo-controlled trials examining the effect of B-vitamin supplementation found the supplementation decreased homocysteine concentrations and improved measures global cognitive function but had no effect on individual measures of executive function, information processing speed, or episodic memory (89)
A Phase 2 trial (NCT01311518) was designed to test RGN-352 in ~75 heart attack patients, but was placed on FDA clinical hold in 2011 due to manufacturing (GMP) compliance issues at the contract site not safety concerns with the drug itself
Precursors of GSH or GPX biosynthesis, various small molecule activators related to the GSH system and some novel therapeutic approaches, such as exosomes and gene therapy, can boost the activity of the GSH system and reduce cardiac damage and ferroptosis
Some animal studies have even shown hormonal changes and ovarian stress after long-term use
Potential Side Effects and Safety Considerations Vitamin B12 injections are generally well-tolerated with an excellent safety profile when administered appropriately
PMC 6470702
