I used to have angina. Probably for 2-3 years. Never severe but painful nonetheless. What brought about the end of angina was megadoses of Vit C. I had been taking probably 20+ grams/day for stubborn allergies in the spring of the year. I continued to take it at night for dust mite allergies at bedtime instead of medications. I noticed one day in the fall that I hadn't had any chest pains for quite a while. It's been I think two years now since I had any. Vitamin C megadoses, according to Linus Pauling and Matthias Rath, allow the arteries to heal which reverses plaque buildup in all but completely blocked arteries. They also recommend adding L-Lysine and Proline to your regime along with the C.