 [ Symptoms ] can vitamins or supplements help bradycardia i have bradycardia from exercising thanks detected through annual physical exam low heart rate exercise stress test [ Disease ] for a year you need to take your husband even if he adamantly refuses to his primary care medical provider as soon as possible he is having a gastrointestinal bleed when your vomit is black or coffee ground like this is blood coming from the stomach or esophagus an active bleed could be life threatening so he will need a gi work up having blood in the stools can also be a very serious sign men are notorious for ignoring these symptoms so drag him to this doctor use duct tape if you must but it is absolutely essential that the source of this bleeding be established and stopped