heart attack
"My dad is in the last stages of congestive heart failure. This mainly means he still functions as much as he can but will continue to degrade. His heart seemed to hurt very consistently. His Dr. gave him Nitro-bid. He applied it as a cream to the chest area 1 or 2 times a day. After less than 2 months he was only using it as needed which was perhaps 1-2 times a month. A very good, fast acting addition to comfort care."