An excellent herbal heart remedy in an emergency, opening arteries to increase blood flow, is cayenne pepper. It not only relaxes the arteries, decreases blood pressure but will also stop bleeding. So there are no worries for hemorrhagic bleeds. It's an amazing God given herb. It has been used to stop heart attacks. I have used it successfully with family members that have experienced heart symptoms of insufficiency. I take it with me on hikes, etc as an emergency "medicine."