Why is supplementing with arginine not a good idea for many people?
                                
                                
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                                    5 min read                                
                            
                                In a 2006 study, researchers had to stop a trial on L-arginine's effects on heart attack survivors after six participants taking the supplement died. For this critical reason and many others, supplementing with arginine is not a good idea for a significant portion of the population, including those with pre-existing health conditions.